{"product_id":"compact-geosynthetic-clay-liner-permeameter","title":"Compact Geosynthetic Clay Liner Permeameter","description":"\u003ch2\u003eCompact Geosynthetic Clay Liner Permeameter – QualiGTX™ CLP C\u003c\/h2\u003e\n\u003ch4\u003ePermeability Coefficient Testing of Geosynthetic Clay Liners and Sodium Bentonite Waterproofing Blankets\u003c\/h4\u003e\n\u003cp\u003eThe QualiGTX™ CLP C is designed to measure the hydraulic permeability of geosynthetic clay liners (GCLs) by\n    monitoring water movement through sodium bentonite waterproofing blankets under a controlled hydraulic differential.\n    During testing, the laboratory measures the volume of water passing through a specimen over a defined period and\n    uses this information, together with the specimen thickness, to determine its permeability coefficient. The\n    instrument accommodates specimens with a diameter of ø70 mm and supports applied pressures up to 50 kPa. Its\n    high-strength aluminum alloy specimen holder maintains secure clamping throughout the test.\u003c\/p\u003e\n\u003cp\u003eObtaining consistent permeability measurements requires careful temperature management. As hydrated bentonite\n    restricts water movement, testing can continue for extended periods, making the results particularly sensitive to\n    changes in water viscosity. Even minor temperature fluctuations can influence the measured flow rate and introduce\n    inconsistencies between tests. To address this issue, the QualiGTX™ CLP C incorporates a water-conditioning system\n    with both heating and cooling capabilities. This arrangement maintains the permeant at a predetermined temperature\n    before it reaches the specimen, rather than allowing its temperature to fluctuate with laboratory conditions. The\n    water supply and reservoir tank are provided in a custom configuration, making this system particularly suitable for\n    laboratories that report permeability results at a standardized reference temperature.\u003c\/p\u003e\n\u003cp\u003eThe instrument also features a large-format color touchscreen for configuring test parameters, monitoring operating\n    conditions, and managing automatic timing. This integrated interface simplifies operation during lengthy permeation\n    tests and minimizes the need for continuous technician involvement. Its vertical column construction brings the\n    water circuit, specimen cell, and control components together within a compact floor area of 720 × 700 mm. Qualitest\n    North America offers the QualiGTX™ CLP C to geosynthetic manufacturers, independent testing facilities, and\n    engineering consultancies conducting GCL permeability and containment liner conformance evaluations.\u003c\/p\u003e\n\u003ch2\u003eCompact Geosynthetic Clay Liner Permeameter – QualiGTX™ CLP C Applications\u003c\/h2\u003e\n\u003cp\u003ePermeability testing establishes whether geosynthetic clay liners provide the hydraulic barrier performance required\n    for their intended applications. The QualiGTX™ CLP C supports this evaluation at different stages, from\n    manufacturing quality checks and incoming material inspection to construction verification and engineering research.\n\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eGCL Manufacturing Quality Assurance: Provides routine permeability measurements across production batches,\n            helping manufacturers monitor water transmission characteristics between rolls and identify inconsistencies\n            in bentonite distribution before products leave the facility.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eLandfill Cell and Cap Projects: Verifies that supplied GCL materials achieve the permeability requirements\n            established in landfill containment designs, supporting barrier performance throughout construction.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eIncoming Material Inspection: Enables independent laboratories and project quality teams to assess delivered\n            GCL rolls against specified permeability limits before installation begins.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eMining and Tailings Containment Systems: Evaluates sodium bentonite barriers intended for use beneath heap\n            leach pads, tailings storage facilities, and process water containment ponds.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eReservoirs, Canals, and Retention Basins: Measures the seepage resistance of GCL materials used in water\n            storage facilities and water conveyance infrastructure.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eSecondary Containment Installations: Supports the assessment of barrier materials specified for areas beneath\n            storage tanks, fuel distribution facilities, and chemical containment bunds.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eWastewater Treatment and Agricultural Lagoons: Determines the suitability of GCL products for manure storage\n            facilities, aeration basins, and industrial wastewater process ponds.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eAcademic and Scientific Research: Provides testing capabilities for investigations into bentonite hydration\n            behavior, cation exchange processes, and the long-term performance of geosynthetic clay barriers.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompact Geosynthetic Clay Liner Permeameter – QualiGTX™ CLP C Key Features\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ CLP C brings together controlled water conditioning, reliable specimen containment, and automated\n    measurement functions in a compact vertical configuration. Its features address the practical requirements of\n    laboratories conducting extended permeability tests on sodium bentonite liners.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eIntegrated Water Heating and Cooling: Regulates permeant temperature through both heating and cooling,\n            maintaining the selected setting and limiting viscosity-related variations that could affect comparisons\n            between test results.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eHigh-Strength Aluminum Alloy Specimen Holder: Provides firm, consistent specimen restraint while keeping the\n            holder assembly relatively lightweight. Its construction also makes specimen replacement easier and reduces\n            operator fatigue during repeated testing.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eLarge-Format Color Touchscreen: Provides a centralized interface for entering test conditions, viewing live\n            operating information, and accessing results, making routine operation and operator training more\n            straightforward.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eAutomatic Digital Timing: Controls the measurement interval without requiring manual stopwatch operation,\n            reducing timing inconsistencies during water collection and permeability calculations.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eDedicated Water Reservoir: Supplies the permeation circuit from an integrated reservoir, allowing the test\n            arrangement to operate independently of direct laboratory water supply connections.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003ePressure Capacity up to 50 kPa: Accommodates the applied hydraulic pressure differentials required for\n            measuring water transmission through sodium bentonite waterproofing blankets.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eø70 mm Specimen Compatibility: Uses a defined specimen diameter to maintain consistent flow area across tests\n            and simplify sample preparation.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eSpace-Efficient Vertical Construction: Arranges the reservoir, specimen cell, and operating controls within a\n            vertical frame measuring 720 × 700 mm in floor footprint.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTheory and Method\u003c\/h2\u003e\n\u003cp\u003eThe permeability coefficient of a geosynthetic clay liner is determined by examining the relationship between water\n    flow through the specimen and the hydraulic conditions under which that flow occurs. Four measurements form the\n    basis of the calculation: the volume of water collected, the duration of collection, the hydraulic head difference\n    across the specimen, and the specimen thickness.\u003c\/p\u003e\n\u003cp\u003eDarcy's relationship provides the basis for calculating the coefficient:\u003c\/p\u003e\nk = QL \/ (A · Δh · t)\n\u003cp\u003eWhere:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003ek = Permeability coefficient\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eQ = Volume of water passing through the specimen\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eL = Specimen thickness\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eA = Cross-sectional flow area\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eΔh = Hydraulic head difference across the specimen\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003et = Water collection period\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach measurement directly affects the calculated result. Inaccurate thickness measurements, inconsistent collection\n    intervals, or errors in determining the hydraulic differential can therefore compromise the reported permeability\n    coefficient. Reliable testing depends on controlling these variables throughout the measurement process.\u003c\/p\u003e\n\u003cp\u003eTemperature control is another important consideration because the measured hydraulic conductivity reflects both the\n    properties of the specimen and the behavior of the fluid passing through it. Water viscosity decreases as\n    temperature rises, with an approximate reduction of two percent per degree Celsius near room temperature.\n    Consequently, even modest temperature changes during an extended test can alter the measured flow rate without any\n    corresponding change in the GCL itself.\u003c\/p\u003e\n\u003cp\u003eMaintaining the permeant at a consistent temperature helps separate actual specimen performance from variations\n    caused by fluid properties. When results must be compared under standardized conditions, measurements can also be\n    corrected to a designated reference temperature, such as 20 °C. Combining temperature-controlled water supply with\n    reference-temperature correction improves the consistency of reported results across different operators and testing\n    laboratories.\u003c\/p\u003e\n\u003cp\u003eThe extremely low flow rates encountered during GCL testing are closely related to the hydration and swelling\n    behavior of sodium bentonite. When exposed to water, montmorillonite mineral layers attract water molecules and\n    hydrated sodium ions into the spaces between their layers. This process causes the bentonite particles to expand. As\n    the material swells within its confined structure, the interconnected voids between particles become progressively\n    smaller, leaving narrow and increasingly tortuous pathways for water movement.\u003c\/p\u003e\n\u003cp\u003eThe degree of swelling and the resulting restriction of water flow depend not only on hydration but also on the\n    compressive stress applied to the material. Confinement influences how much the bentonite can expand and,\n    consequently, how effectively it closes the available flow paths. For this reason, maintaining secure specimen\n    containment is essential to obtaining meaningful permeability measurements. The clamping assembly must prevent water\n    from bypassing the specimen along its perimeter, ensuring that the collected permeant represents water that has\n    passed through the bentonite rather than leakage around its edges.\u003c\/p\u003e\n\u003ch2\u003eCompact Geosynthetic Clay Liner Permeameter - QualiGTX™ CLP C Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\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\u003eTest Method\u003c\/td\u003e\n            \u003ctd\u003ePermeability coefficient of sodium bentonite GCL under specified hydraulic differential\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eSpecimen Diameter\u003c\/td\u003e\n            \u003ctd\u003eø70 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eMaximum Applied Pressure\u003c\/td\u003e\n            \u003ctd\u003e50 kPa\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eSpecimen Holder Material\u003c\/td\u003e\n            \u003ctd\u003eHigh-strength aluminum alloy\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eControl System\u003c\/td\u003e\n            \u003ctd\u003eLarge-format color touchscreen\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eTiming\u003c\/td\u003e\n            \u003ctd\u003eDigital, automatic\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eWater Supply\u003c\/td\u003e\n            \u003ctd\u003eTemperature-controlled with heating and cooling, plus reservoir tank (custom configuration)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eDimensions (W × D × H)\u003c\/td\u003e\n            \u003ctd\u003e720 × 700 × 1910 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eWeight\u003c\/td\u003e\n            \u003ctd\u003e110 kg\u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eConfiguration\u003c\/h3\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\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\u003eSpecimen Holder\u003c\/td\u003e\n            \u003ctd\u003eHigh-strength aluminum alloy clamping assembly for ø70 mm specimens\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eControl System\u003c\/td\u003e\n            \u003ctd\u003eLarge-format color touchscreen with automatic digital timing\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eWater Conditioning Unit\u003c\/td\u003e\n            \u003ctd\u003eTemperature-controlled supply with heating and cooling, custom order\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eWater Reservoir\u003c\/td\u003e\n            \u003ctd\u003ePermeant supply tank, custom order\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eSupport Frame\u003c\/td\u003e\n            \u003ctd\u003eFloor-standing vertical column structure\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":53606227214647,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/compact-geosynthetic-clay-liner_7c33047e-63c9-40a1-a8ad-169258aba1af.webp?v=1794491031","url":"https:\/\/qualitest.us\/pt\/products\/compact-geosynthetic-clay-liner-permeameter","provider":"Qualitest USA LC","version":"1.0","type":"link"}