{"title":"In-Plane Water Flow Rate Tester","description":"\u003cdiv\u003e\n\u003ch2\u003eIn-Plane Water Flow Rate Tester\u003c\/h2\u003e\n\u003ch4\u003eMeasure drainage flow capacity from 10 to 500 kPa under index or soil-confined conditions.\u003c\/h4\u003e\n\u003cp\u003eIn-plane water flow rate testers determine the volume of water a geosynthetic material can transmit along its plane when subjected to compressive loading. Geonet manufacturers, landfill engineers, transportation specialists, and testing laboratories use these instruments to evaluate drainage performance before materials are installed. The Qualitest product range includes compact index testing systems and advanced soil-confined performance testers. Select the appropriate model based on normal stress, specimen dimensions, and required boundary conditions.\u003c\/p\u003e\n\u003cp\u003eEach model applies a constant hydraulic head to drive water through a specimen and measures flow rate per unit width and hydraulic transmissivity. Since normal stress directly affects drainage performance, the available systems cover a range from 10 kPa to 500 kPa. Specimen dimensions vary from 100 × 200 mm to a 450 mm soil-confined flow length. Choosing the correct configuration helps ensure test results represent the conditions relevant to your design requirements.\u003c\/p\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eDrainage geosynthetics are used in applications where water must flow laterally through a structure. Evaluating their in-plane flow capacity helps verify that drainage requirements are met before installation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eLandfill Engineering: Evaluates leachate collection systems, landfill cap drainage layers, and groundwater interception blankets under normal stresses corresponding to waste column heights.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eRailway and Highway Drainage: Verifies the drainage performance of edge drains, drainage blankets, and subgrade drainage systems under embankment and traffic loading.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eDrainage Geocomposite Manufacturing: Supports batch acceptance testing of geonet cores and bonded geotextile composites against specified water flow values.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eRetaining Walls and Reinforced Soil: Measures the drainage capacity of materials installed behind facing units, where pore pressure relief is essential to structural stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eBuilding and Below-Grade Waterproofing: Evaluates sheet drains and drainage boards designed to relieve hydrostatic pressure against basement walls.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eMining and Heap Leach Pads: Assesses solution collection layers subjected to the loading generated by tall ore stacks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eGreen Roofs and Sports Fields: Verifies that drainage mats effectively remove water from beneath growing media and playing surfaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eGeotechnical Design Verification: Provides project-specific intrusion reduction factors to support accurate drainage layer design and sizing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eIn-Plane Water Flow Rate Tester Range\u003c\/h2\u003e\n\u003cp\u003eFive models provide testing solutions ranging from routine index evaluations to soil-confined performance simulation. Compare specimen dimensions, normal stress capacity, and instrumentation to identify the most suitable configuration for your testing requirements.\u003c\/p\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"665\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSpecimen Size\u003c\/th\u003e\n\u003cth\u003eNormal Stress\u003c\/th\u003e\n\u003cth\u003eWater and Control\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompact In-Plane Water Flow Tester (QualiGGTE™ IPF C)\u003c\/td\u003e\n\u003ctd\u003e100 × 200 mm\u003c\/td\u003e\n\u003ctd\u003e10 to 250 kPa\u003c\/td\u003e\n\u003ctd\u003e10-inch color LCD, motorized head, servo normal load\u003c\/td\u003e\n\u003ctd\u003eEntry-level index tester with the smallest specimen and a servo-controlled load frame. Suits labs building stress-versus-flow curves on a modest budget and footprint.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutomatic In-Plane Water Flow Tester (QualiGGTE™ IPF A)\u003c\/td\u003e\n\u003ctd\u003e200 × 300 mm\u003c\/td\u003e\n\u003ctd\u003e10 to 250 kPa\u003c\/td\u003e\n\u003ctd\u003eTouchscreen PC, thermostatted supply 5 to 60 °C, dissolved oxygen analyzer, automatic reporting\u003c\/td\u003e\n\u003ctd\u003eThe instrumented lab model. Temperature control holds water viscosity steady and the dissolved oxygen analyzer confirms deaeration, which matters for repeatable results across long test programs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrainage Geocomposite Flow Tester (QualiGGTE™ IPF D)\u003c\/td\u003e\n\u003ctd\u003e300 × 350 mm\u003c\/td\u003e\n\u003ctd\u003e150 kPa\u003c\/td\u003e\n\u003ctd\u003eTouchscreen microcomputer, full stainless wetted path, automatic outflow display\u003c\/td\u003e\n\u003ctd\u003eFixed-pressure production QC unit with a large specimen and a corrosion-free water circuit. Built for high-throughput acceptance testing of drainage boards and composites.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeonet Transmissivity Tester (QualiGGTE™ IPF G)\u003c\/td\u003e\n\u003ctd\u003e300 × 350 mm\u003c\/td\u003e\n\u003ctd\u003e10 to 500 kPa\u003c\/td\u003e\n\u003ctd\u003eTouchscreen microcomputer, full stainless wetted path, automatic outflow display\u003c\/td\u003e\n\u003ctd\u003eThe widest stress range in the series. Reaches the overburden a leachate collection layer sees under a deep waste column, where lighter frames stop short.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoil-Confined Geosynthetic Transmissivity Tester (QualiGGTE™ IPF S)\u003c\/td\u003e\n\u003ctd\u003e450 mm flow length in an 800 × 500 × 650 mm soil box\u003c\/td\u003e\n\u003ctd\u003eSoil overburden confinement\u003c\/td\u003e\n\u003ctd\u003eSoil-confined test chamber\u003c\/td\u003e\n\u003ctd\u003eThe only performance tester in the range. Buries the specimen between compacted soil layers so the result captures geotextile intrusion that rigid-platen testing never shows.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eHow to Choose the Right In-Plane Water Flow Rate Tester\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eFor routine index testing with limited laboratory space: Select the IPF C. It provides a complete 10 to 250 kPa testing range while accommodating the smallest specimen size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eFor consistent and repeatable laboratory testing: Choose the IPF A. Its temperature regulation and dissolved oxygen monitoring help control two important variables that can affect test reproducibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eFor high-volume production quality control at a fixed design pressure: The IPF D features a larger specimen capacity and a stainless steel water circuit designed for continuous operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eFor landfill leachate collection and deep-stack applications: Choose the IPF G, the only model in the range capable of reaching 500 kPa.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eFor design-stage drainage evaluations supported by representative test conditions: The IPF S simulates soil contact, helping distinguish catalog hydraulic transmissivity from actual installed performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eFor laboratories conducting comprehensive product qualification: Combine an index testing system with the IPF S to obtain both sets of results, as design reviewers increasingly expect index and soil-confined performance data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Qualitest for Your In-Plane Water Flow Rate Tester\u003c\/h2\u003e\n\u003cp\u003eQualitest North America provides testing and measurement equipment for laboratories, quality assurance teams, and manufacturers, supported by responsive technical assistance and calibration services. The In-Plane Water Flow Rate Tester range is designed to deliver dependable results in accordance with applicable testing standards, giving customers confidence when sourcing their equipment from one supplier.\u003c\/p\u003e\n\u003cp\u003eOur technical team can help identify the appropriate tester configuration based on your specimen requirements, applicable standards, and testing volume. We also provide support throughout installation and subsequent equipment operation.\u003c\/p\u003e\n\u003ch2\u003eRequest a Quote\u003c\/h2\u003e\n\u003cp\u003eShare details about the material you need to test, the normal stress required for your design conditions, and whether your application calls for index or soil-confined testing. Our team will help identify the appropriate model for your requirements.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/qualitest.us\/pages\/contact\"\u003eContact the Qualitest team\u003c\/a\u003e to request pricing information and current lead times.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"compact-in-plane-water-flow-tester","title":"Compact In-Plane Water Flow Tester","description":"\u003cdiv\u003e\n\u003ch2\u003eCompact In-Plane Water Flow Tester – QualiGTX™ IPF C\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ IPF C Compact In-Plane Water Flow Tester determines the hydraulic transmissivity and flow rate per unit width of geotextiles and geotextile-related drainage products. Qualitest provides this testing instrument for geosynthetics manufacturers, civil engineering laboratories, and independent testing facilities that evaluate drainage materials before installation. It secures a 100 × 200 mm specimen between platens, maintains a constant hydraulic head, and measures the volume of water flowing through the material along its plane. The resulting data helps engineers determine drainage layer capacity and make informed design decisions.\u003c\/p\u003e\n\u003cp\u003eA servo-controlled normal force system applies compressive loads from 10 to 250 kPa and maintains the selected pressure throughout the test. Since compression affects the internal structure and drainage performance of geosynthetic products, evaluating flow capacity under different stress conditions is essential. The QualiGTX™ IPF C allows operators to test specimens at multiple pressure levels and develop flow capacity curves instead of relying on a single measurement. Its motorized water level adjustment system also establishes the required hydraulic gradient without manual leveling.\u003c\/p\u003e\n\u003cp\u003eThe instrument features a 10-inch color LCD control system that displays applied pressure and elapsed testing time in real time. Operators can manage test configurations, load application, and hydraulic head positioning through one interface, simplifying operation and minimizing parameter setting errors. The IPF C is well suited to laboratories performing routine drainage material evaluations that require consistent, repeatable results across operators with varying experience levels.\u003c\/p\u003e\n\u003ch2\u003eCompact In-Plane Water Flow Tester – QualiGTX™ IPF C Applications\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ IPF C supports testing programs that evaluate water movement parallel to the surface of geosynthetic materials rather than through their thickness. Its applications cover product development, manufacturing quality control, and construction material acceptance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eDrainage Geocomposite Manufacturing: Evaluates the flow capacity of geonet and geotextile composites under compressive stress conditions representative of their intended service environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eGeotextile Production Quality Control: Performs batch testing of nonwoven filter and drainage fabrics to verify that in-plane hydraulic conductivity meets specified requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eLandfill Engineering: Assesses leachate collection and leak detection layers under overburden pressures corresponding to waste column heights.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eHighway and Railway Subgrade Drainage: Verifies that edge drains and separation layers provide sufficient water removal capacity under traffic-related loading conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eRetaining Wall and Basement Drainage: Measures the drainage performance of prefabricated sheet drains installed behind structural walls.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eHydraulic and Water Conservancy Projects: Qualifies drainage layers used in dams, canals, and reservoir slope protection systems where seepage control is an important design consideration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eTunnel and Underground Structure Waterproofing: Evaluates drainage sheets designed to transport infiltrating groundwater toward designated collection points.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eGreen Roof and Sports Field Construction: Tests drainage mats that prevent water accumulation in root zones and sports playing surfaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eThird-Party Testing Laboratories: Provides a reliable testing platform for contract evaluations, independent verification, and conformity assessment of supplied geosynthetic materials.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eResearch and Product Development: Facilitates comparative investigations into core geometry, filament structure, and composite bonding to assess their effects on long-term water flow performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompact In-Plane Water Flow Tester – QualiGTX™ IPF C Key Features\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ IPF C integrates automated compressive load regulation and an intuitive control interface to maintain consistent testing conditions throughout extended drainage evaluations.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eServo-Controlled Normal Force System: Automatically applies and maintains the selected compressive pressure, keeping specimen stress stable during extended steady-state water flow measurements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e10-Inch Color LCD Control System: Displays test configuration, real-time measurements, and operating status on a large, easy-to-read screen for convenient laboratory operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eReal-Time Pressure and Time Display: Simultaneously monitors applied compressive stress and elapsed testing time, helping operators verify steady-state conditions before recording measurements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eMotorized Water Level Adjustment: Electrically positions the head reservoir to establish the required hydraulic gradient, eliminating manual leveling and associated adjustment errors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eWide 10 to 250 kPa Stress Range: Accommodates testing conditions ranging from shallow drainage applications to moderate embankment and landfill loading pressures of up to 250 kPa.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eDual Hydraulic Gradient Settings: Provides hydraulic gradients of 0.1 and 1.0 to accommodate both low-slope filtration evaluations and steeper drainage configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e100 × 200 mm Specimen Chamber: Maintains a standardized specimen flow path length and width, supporting consistent comparisons across operators and production batches.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eRigid Floor-Standing Frame: Provides structural stability under maximum normal loading, minimizing frame deflection and ensuring that the applied compressive force is transferred to the specimen.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTheory and Method\u003c\/h2\u003e\n\u003cp\u003eIn-plane water flow refers to the movement of water parallel to a geosynthetic material's surface rather than through its thickness. Under laminar flow conditions, this behavior follows Darcy's law, which establishes a proportional relationship between volumetric flow rate and the hydraulic gradient driving the water movement. Hydraulic transmissivity, represented by the symbol theta (θ), is calculated by dividing the flow rate per unit specimen width by the hydraulic gradient. Its unit is square meters per second. Transmissivity is also equivalent to the product of the material's in-plane permeability and its thickness under applied load, demonstrating the relationship between material thickness and drainage capacity.\u003c\/p\u003e\n\u003cp\u003eNormal stress is another critical factor influencing in-plane flow performance. As compressive pressure increases, pore spaces within the drainage core become smaller, adjacent geotextile layers intrude into the flow channels, and the cross-sectional area available for water movement decreases. This reduction in flow capacity is non-linear. Consequently, a drainage product that performs effectively at 20 kPa may deliver insufficient capacity under a pressure of 200 kPa. Testing specimens across the 10 to 250 kPa loading range generates a flow capacity curve that engineers can use to estimate drainage performance at the actual overburden pressure expected at a project site.\u003c\/p\u003e\n\u003cp\u003eThe QualiGTX™ IPF C mechanically replicates these testing conditions. Its servo-controlled loading system applies and maintains the selected normal pressure on the 100 × 200 mm specimen, while the motorized reservoir establishes the upstream hydraulic head required for a gradient of 0.1 or 1.0. Water enters through one edge of the clamped specimen, travels along its designated flow path, and exits through the downstream edge. Once steady-state flow is established, the operator collects the discharged water volume over a measured time interval. The flow rate per unit width and hydraulic transmissivity are then calculated using the measured discharge volume, specimen width, and applied hydraulic gradient.\u003c\/p\u003e\n\u003ch2\u003eCompact In-Plane Water Flow Tester - QualiGTX™ IPF C Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"612\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecimen Size\u003c\/td\u003e\n\u003ctd\u003e100 × 200 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal Stress Range\u003c\/td\u003e\n\u003ctd\u003e10 to 250 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal Load Control\u003c\/td\u003e\n\u003ctd\u003eServo system, automatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHydraulic Gradient\u003c\/td\u003e\n\u003ctd\u003e0.1 and 1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Condition\u003c\/td\u003e\n\u003ctd\u003eConstant head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Level Adjustment\u003c\/td\u003e\n\u003ctd\u003eMotorized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl and Display\u003c\/td\u003e\n\u003ctd\u003e10-inch color LCD control system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplayed Parameters\u003c\/td\u003e\n\u003ctd\u003eApplied pressure, elapsed time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasured Properties\u003c\/td\u003e\n\u003ctd\u003eIn-plane flow rate per unit width, hydraulic transmissivity, horizontal permeability coefficient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Dimensions\u003c\/td\u003e\n\u003ctd\u003e1270 × 600 × 1500 mm (W × D × H)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e150 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53459913015607,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/compact-plane-water-flow-tester1.webp?v=1793367013"},{"product_id":"automatic-in-plane-water-flow-tester","title":"Automatic In-Plane Water Flow Tester","description":"\u003cdiv\u003e\n\u003ch2\u003eAutomatic In-Plane Water Flow Tester – QualiGTX™ IPF A\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ IPF A Automatic In-Plane Water Flow Tester measures the flow rate per unit width and hydraulic transmissivity of geotextiles, geonets, and drainage geocomposites under constant hydraulic head and controlled normal stress. Qualitest designed the IPF A for accredited testing laboratories, geosynthetics manufacturers, and engineering consultancies that require reliable drainage performance data for contractual reporting.\u003c\/p\u003e\n\u003cp\u003eThe instrument accommodates specimens measuring 200 × 300 mm and applies normal stress from 10 to 250 kPa through a servo-driven force control system. Water flows along the plane of the specimen while an industrial touchscreen computer manages the testing sequence and automatically generates test reports.\u003c\/p\u003e\n\u003cp\u003eAdvanced water conditioning distinguishes the IPF A from conventional transmissivity testing systems. Its dedicated water supply tank maintains temperatures between 5 °C and 60 °C with 0.1 °C resolution, controlling viscosity throughout extended testing programs. An integrated dissolved oxygen analyzer monitors the aeration condition of the supply water, verifying adequate deaeration and helping prevent entrained gas from affecting measurements.\u003c\/p\u003e\n\u003cp\u003eAutomatic timing tracks test duration and cumulative water throughput before compiling the results into a report, eliminating manual data transcription. Operators can configure normal stress increments and the hydraulic gradient in advance, allowing the instrument to maintain consistent testing conditions across specimens and shifts. For laboratories conducting shipment acceptance testing of drainage products, the system provides traceable test records alongside quantitative flow measurements.\u003c\/p\u003e\n\u003ch2\u003eAutomatic In-Plane Water Flow Tester – QualiGTX™ IPF A Applications\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ IPF A supports geosynthetic drainage performance evaluation wherever water must travel along the material plane under compressive loading. Its applications extend from material research and product development to manufacturing quality control and construction acceptance testing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eDrainage Geocomposite Manufacturing: Evaluates the drainage capacity of geonet cores and bonded geotextile composites under compressive stresses representative of actual service conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eLandfill Engineering: Assesses leachate collection systems, leak detection layers, and cover drainage materials under overburden pressures corresponding to waste column heights.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eGeotextile Production Quality Control: Performs batch testing of nonwoven filtration and drainage fabrics to verify that in-plane hydraulic conductivity remains within specified limits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eAccredited Testing Laboratories: Provides controlled water temperature, deaeration monitoring, and automated reporting to support conformity assessment requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eHighway and Railway Drainage Design: Measures the drainage performance of edge drains and separation layers under traffic-related and embankment loading conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eRetaining Wall and Basement Drainage: Evaluates prefabricated sheet drainage products installed behind structural walls, where hydrostatic pressure relief is an essential design consideration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eDam, Canal, and Reservoir Works: Examines drainage layers used for seepage management and slope protection in hydraulic infrastructure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eTunnel and Underground Waterproofing: Tests drainage sheets designed to channel groundwater infiltration toward designated collection systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eMining and Heap Leach Pads: Determines the performance of solution collection layers subjected to substantial stack loads and aggressive process fluids.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eResearch and Product Development: Facilitates comparative investigations into core geometry, filament structure, and bonding techniques and their effects on long-term drainage performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAutomatic In-Plane Water Flow Tester – QualiGTX™ IPF A Key Features\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ IPF A integrates automated load application and water flow regulation with advanced conditioning and monitoring functions to deliver consistent results throughout extended testing sequences.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eIndustrial Touchscreen Computer Control: Manages test configuration, load application, timing, and report generation through a centralized operator interface, reducing training requirements and setup errors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eServo-Controlled Normal Force System: Automatically applies and maintains the selected compressive load, keeping specimen stress consistent during extended steady-state flow measurements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eAutomatic Timing and Throughput Reporting: Records elapsed testing time and cumulative water volume, then generates reports without requiring manual data entry.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eThermostatted Water Supply with Tank: Maintains water temperatures from 5 °C to 60 °C with 0.1 °C resolution, helping stabilize water viscosity throughout the testing program.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eIntegrated Dissolved Oxygen Analyzer: Monitors the deaeration condition of the supply water to prevent trapped gas from obstructing flow channels and reducing measured drainage capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eMotorized Water Level Adjustment: Electrically positions the hydraulic head reservoir to establish the required hydraulic gradient, eliminating manual adjustment and associated positioning errors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eReal-Time Pressure and Time Display: Displays applied normal stress and elapsed testing duration, allowing operators to verify steady-state conditions before recording measurements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e200 × 300 mm Specimen Chamber: Provides a standardized specimen area and flow path for repeatable transmissivity measurements across production batches while better representing full-width product drainage geometry.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eWide 10 to 250 kPa Stress Range: Accommodates testing conditions ranging from shallow landscape drainage applications to heavily loaded landfill and embankment installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTheory and Method\u003c\/h2\u003e\n\u003cp\u003eIn-plane water flow describes the movement of water parallel to a geosynthetic surface rather than through its thickness. Under laminar flow conditions, volumetric flow rate is proportional to the hydraulic gradient, in accordance with Darcy's law. Hydraulic transmissivity, represented by the symbol theta (θ), is calculated by dividing the flow rate per unit specimen width by the hydraulic gradient. Its unit is square meters per second (m²\/s).\u003c\/p\u003e\n\u003cp\u003eHydraulic transmissivity is also equivalent to in-plane permeability multiplied by the compressed material thickness. Consequently, the thickness retained under loading is directly related to the material's ability to convey water.\u003c\/p\u003e\n\u003cp\u003eNormal stress has a significant influence on drainage performance, in addition to the material's inherent properties. When a drainage core is compressed, its internal void space decreases, while the adjacent geotextile can press into the flow channels. This reduces the cross-sectional area available for water movement. Because this reduction is nonlinear, a drainage product that performs satisfactorily at 20 kPa may not meet requirements at 200 kPa. Testing across the 10 to 250 kPa range establishes a flow capacity curve that design engineers can use to estimate performance under site-specific overburden pressures.\u003c\/p\u003e\n\u003cp\u003eWater quality and conditioning are equally important for measurement accuracy. Dissolved gases can escape from the water inside the specimen, forming bubbles within the drainage channels and obstructing otherwise open flow paths. This interference can produce artificially low transmissivity readings. Water viscosity also changes by approximately 2 to 3% per degree Celsius, meaning uncontrolled temperature variations can cause measurement differences between morning and afternoon testing sessions.\u003c\/p\u003e\n\u003cp\u003eThe QualiGTX™ IPF A addresses these measurement challenges through its temperature-regulated water supply tank and integrated dissolved oxygen analyzer. Together, these systems maintain controlled water conditions and verify adequate deaeration before the operator accepts a measurement, supporting reliable and repeatable in-plane flow and hydraulic transmissivity results.\u003c\/p\u003e\n\u003ch2\u003eAutomatic In-Plane Water Flow Tester - QualiGTX™ IPF A Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"612\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecimen Size\u003c\/td\u003e\n\u003ctd\u003e200 × 300 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal Stress Range\u003c\/td\u003e\n\u003ctd\u003e10 to 250 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNormal Load Control\u003c\/td\u003e\n\u003ctd\u003eServo system, automatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHydraulic Gradient\u003c\/td\u003e\n\u003ctd\u003e0.1 and 1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Condition\u003c\/td\u003e\n\u003ctd\u003eConstant head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Level Adjustment\u003c\/td\u003e\n\u003ctd\u003eMotorized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Temperature Range\u003c\/td\u003e\n\u003ctd\u003e5 °C to 60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Resolution\u003c\/td\u003e\n\u003ctd\u003e0.1 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissolved Oxygen Range\u003c\/td\u003e\n\u003ctd\u003e0 to 20 mg\/L, 0 to 200 %, 0 to 400 hPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissolved Oxygen Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1.5 % FS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissolved Oxygen Repeatability\u003c\/td\u003e\n\u003ctd\u003e±0.5 % FS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissolved Oxygen Resolution\u003c\/td\u003e\n\u003ctd\u003e0.01 mg\/L, 0.1 %, 1 hPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl System\u003c\/td\u003e\n\u003ctd\u003eIndustrial touchscreen computer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Output\u003c\/td\u003e\n\u003ctd\u003eAutomatic timing, throughput display, report generation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasured Properties\u003c\/td\u003e\n\u003ctd\u003ein-plane permeability (hydraulic conductivity)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Dimensions\u003c\/td\u003e\n\u003ctd\u003e1270 × 600 × 1500 mm (W × D × H)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e200 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIncluded Configuration\u003c\/h3\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" width=\"612\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Frame and Specimen Chamber\u003c\/td\u003e\n\u003ctd\u003eFloor-standing frame with 200 × 300 mm platen assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eServo Normal Load System\u003c\/td\u003e\n\u003ctd\u003eAutomatic application and hold of 10 to 250 kPa normal stress\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndustrial Touchscreen Computer\u003c\/td\u003e\n\u003ctd\u003eTest control, live readout, timing, and report generation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstant-Temperature Water Tank\u003c\/td\u003e\n\u003ctd\u003eRegulated supply water from 5 °C to 60 °C at 0.1 °C resolution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissolved Oxygen Analyzer\u003c\/td\u003e\n\u003ctd\u003eMonitors aeration state of supply water to verify deaeration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotorized Head Reservoir\u003c\/td\u003e\n\u003ctd\u003eElectric water level positioning for gradient settings of 0.1 and 1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53459916554551,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/automatic-plane-water-flow-teste.webp?v=1793367202"},{"product_id":"soil-confined-geosynthetic-transmissivity-tester","title":"Soil-Confined Geosynthetic Transmissivity Tester","description":"\u003ch2\u003e\u003cspan\u003eSoil-Confined Geosynthetic Transmissivity Tester – QualiGTX™ IPF S\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ IPF S Soil-Confined Transmissivity Tester determines the in-plane flow capacity of drainage geocomposites, geonets, and drainage boards under simulated field conditions. Unlike conventional testing methods that clamp specimens between rigid steel platens, this instrument evaluates drainage materials buried between layers of compacted soil. Qualitest provides the IPF S for geotechnical laboratories, landfill design professionals, and transportation engineers who require drainage measurements representative of actual installation conditions rather than index values.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe instrument features an 800 × 500 × 650 mm test box designed to accommodate soil layers above and below a 450 mm flow length of drainage material. Water enters through the upstream boundary, passes along the confined specimen, and exits downstream for collection and measurement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSoil confinement can significantly influence measured flow capacity. When a geotextile is pressed against a drainage core by surrounding soil, it can deflect into the core openings and restrict the channels through which water flows. This behavior cannot be accurately reproduced using rigid-platen testing. Consequently, measurements obtained between steel plates may substantially overestimate the flow capacity that the same drainage product achieves under actual ground conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe IPF S enables design teams to establish reliable, project-specific reduction factors instead of relying on generalized values from published literature. By filling the test chamber with the actual subgrade, backfill, or cover soil specified for a project, laboratories can determine flow capacity under representative site conditions rather than relying solely on catalog data. This provides contractors, owners, and design reviewers with more defensible performance measurements.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eSoil-Confined Geosynthetic Transmissivity Tester – QualiGTX™ IPF S Applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ IPF S is suitable for projects involving drainage geosynthetics installed beneath soil layers, where the influence of soil confinement on flow capacity must be considered during design and performance evaluation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLandfill Cap and Cover Drainage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Evaluates drainage performance beneath compacted cover soil profiles constructed inside the test chamber.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRailway Subgrade and Trackbed Drainage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Simulates contact between ballast, subgrade, and drainage materials to assess drainage performance beneath railway track structures.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eHighway Embankment and Subsurface Drainage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Tests edge drains and drainage blanket layers confined by the fill materials specified for highway alignments.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRetaining Wall and Reinforced Soil Backfill:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Assesses drainage components positioned between structural backfill layers, where pore pressure relief is essential to stability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGreen Roof and Podium Deck Systems:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Evaluates drainage mats subjected to the loading and contact conditions created by growing media rather than rigid plates.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGeotechnical Design Verification:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Establishes project-specific intrusion reduction factors for drainage layer sizing and design calculations.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDrainage Geocomposite Product Development:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Compares drainage core configurations and geotextile stiffness under soil contact conditions that influence field performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMining and Heap Leach Pad Engineering:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Measures the flow characteristics of solution collection layers confined by ore and drainage aggregate.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAgricultural and Land Drainage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Evaluates subsurface drainage products installed beneath cultivated soil profiles.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eResearch and Academic Laboratories:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports investigations into soil intrusion, long-term creep behavior, and differences between index flow values and actual performance measurements.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eSoil-Confined Geosynthetic Transmissivity Tester – QualiGTX™ IPF S Key Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ IPF S is specifically designed to reproduce the soil contact conditions that influence the performance of buried drainage geosynthetics.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSoil-Confined Test Chamber:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Positions compacted soil above and below the specimen to measure flow capacity under conditions representative of actual service environments rather than idealized rigid-platen arrangements.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLarge 800 × 500 × 650 mm Test Box:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides sufficient space for realistic soil layer thickness on both sides of the specimen, minimizing boundary effects associated with shallow test chambers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e450 mm Specimen Flow Length:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides an extended flow path that supports steady-state conditions while minimizing the influence of edge effects on test results.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eProject-Specific Soil Configuration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Accommodates the actual subgrade, backfill, or cover soil specified for a project, allowing the determination of reduction factors based on site-specific conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePerformance-Test Boundary Conditions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides a confined testing arrangement that complements index measurements and supports the performance data increasingly expected during design reviews.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRigid Floor-Standing Frame:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supports the weight of a fully loaded soil test box while maintaining structural stability and preventing deflection that could affect the flow geometry.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSelf-Contained Cabinet Layout:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Integrates the test chamber, flow path, and water collection arrangement within a compact 1040 × 660 × 1200 mm footprint, suitable for installation in a standard laboratory bay.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eTheory and Method\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eIn-plane flow capacity testing generally involves two approaches: index testing and performance testing. Index testing secures a specimen between rigid platens to produce repeatable measurements for comparing different drainage products. Performance testing replaces these rigid surfaces with the materials that will contact the drainage layer during actual service. This changes the testing boundary conditions and can substantially influence the measured results. The QualiGTX™ IPF S performs performance-based testing by confining the specimen between compacted soil layers inside its test chamber.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSoil intrusion is the primary factor behind the difference in measured flow capacity. Pressure from surrounding soil causes the geotextile to deflect into the open apertures of the underlying drainage core, reducing the cross-sectional area available for water movement. Fine soil particles can also penetrate the drainage channels. These effects reduce both the core thickness and its available open flow area. As a result, the flow capacity measured under soil confinement may decrease to a fraction of the value obtained using rigid platens for the same drainage product. Designers account for this reduction by applying intrusion reduction factors to catalog transmissivity values.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe testing procedure uses the constant-head method. First, the operator prepares the soil profile inside the 800 × 500 × 650 mm test box and positions a 450 mm flow length of drainage material within the soil layers. The cover soil is then compacted to the specified target density. Water is introduced at the upstream boundary and flows through the confined specimen toward the downstream outlet. Once steady-state flow is established, the discharged water is collected over a measured time interval to determine the specimen's flow capacity.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eSoil-Confined Geosynthetic Transmissivity Tester - QualiGTX™ IPF S Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecimen Length\u003c\/td\u003e\n\u003ctd\u003e450 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Box Dimensions\u003c\/td\u003e\n\u003ctd\u003e800 × 500 × 650 mm (L × W × H)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Configuration\u003c\/td\u003e\n\u003ctd\u003eSoil-confined, specimen buried between compacted soil layers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Condition\u003c\/td\u003e\n\u003ctd\u003eConstant head\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasured Properties\u003c\/td\u003e\n\u003ctd\u003eSoil-confined in-plane water flow capacity, flow rate per unit width\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Dimensions\u003c\/td\u003e\n\u003ctd\u003e1040 × 660 × 1200 mm (W × D × H)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e220 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53459930284343,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/soil-confined-geosynthetic-trans.webp?v=1793367371"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/collections\/plane-water-flow-rate-tester2139.webp?v=1793365141","url":"https:\/\/qualitest.us\/pt\/collections\/in-plane-water-flow-rate-tester.oembed","provider":"Qualitest USA LC","version":"1.0","type":"link"}