{"title":"Geotextile Cone Drop Testers","description":"\u003ch2\u003eGeotextile Cone Drop Testers for Dynamic Perforation Testing | EN ISO 13433\u003c\/h2\u003e\n\u003cp\u003eGeotextile cone drop testers determine the resistance of geosynthetic materials to penetration under a controlled impact. The test follows the dynamic perforation procedure outlined in EN ISO 13433, using a 1 kg steel cone released from a height of 500 mm onto a securely clamped specimen. After impact, the diameter of the resulting opening is measured using a graduated measuring cone. A smaller opening indicates greater resistance to perforation.\u003c\/p\u003e\n\u003cp\u003eQualitest offers three geotextile cone drop tester configurations, each designed around the same standardized testing geometry. The range includes an automatic model for high-volume testing, a manual configuration for routine laboratory applications, and a space-saving version for laboratories with limited floor space. All three models feature the specified 45° stainless steel cone, 150 mm specimen clamping ring, and graduated measuring cone required for the test method.\u003c\/p\u003e\n\u003ch2\u003eApplications of Geotextile Cone Drop Testers\u003c\/h2\u003e\n\u003cp\u003eDynamic perforation testing is essential for evaluating geotextile durability and determining material suitability for ground engineering projects involving coarse aggregates and other potentially damaging materials.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eGeosynthetic Manufacturing: Assesses the perforation resistance of woven, nonwoven, and needle-punched geotextiles during batch-level production quality control.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGeomembrane Protection Layers: Evaluates and compares cushioning geotextiles used to protect landfill liners against sharp, angular stones in basal lining and capping systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRoad and Highway Construction: Verifies the suitability of separation and stabilization fabrics installed over weak subgrades before aggregate layers are placed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstallation Damage Quality Control: Checks geotextile rolls delivered to construction sites to identify materials susceptible to perforation during handling and installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eErosion Control and Hydraulic Works: Determines the resistance of filter fabrics positioned beneath riprap, gabions, and channel protection structures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRailway and Ballast Applications: Evaluates geotextiles installed directly beneath angular railway ballast to assess their resistance to penetration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTesting and Certification Laboratories: Provides dynamic perforation test results for technical project submissions and CE documentation requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eGeotextile Cone Drop Tester Models\u003c\/h2\u003e\n\u003cp\u003eQualitest offers three models with identical test geometry to maintain consistency in testing conditions and result accuracy. The main differences relate to the level of automation, operating requirements, and equipment footprint, allowing laboratories and manufacturers to select a configuration that suits their testing workload.\u003c\/p\u003e\n\u003ch3\u003eShared Test Geometry\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\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\u003eClamping Ring Inner Diameter\u003c\/td\u003e\n\u003ctd\u003e150 ± 0.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrop Height (Cone Tip to Specimen)\u003c\/td\u003e\n\u003ctd\u003e500 ± 2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrop Cone Material\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrop Cone Maximum Diameter\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrop Cone Angle\u003c\/td\u003e\n\u003ctd\u003e45°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrop Cone Total Mass (Including Guide Rod)\u003c\/td\u003e\n\u003ctd\u003e1000 ± 5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduated Measuring Cone Mass\u003c\/td\u003e\n\u003ctd\u003e600 ± 5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eModel Comparison\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\u003eModel\u003c\/th\u003e\n\u003cth\u003eOperation\u003c\/th\u003e\n\u003cth\u003eDimensions (W × D × H)\u003c\/th\u003e\n\u003cth\u003eNet Weight\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\u003e\u003cstrong\u003eQualiGTX™ CDT A\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic lift, release, and clamping\u003c\/td\u003e\n\u003ctd\u003e700 × 620 × 1360 mm\u003c\/td\u003e\n\u003ctd\u003e120 kg\u003c\/td\u003e\n\u003ctd\u003eThe touchscreen-operated system automates the entire testing sequence, including cone lifting, release, and specimen clamping. Its rigid frame effectively absorbs impact recoil during successive tests, making it well suited to production quality control and high-volume sample testing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQualiGTX™ CDT M\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eManual lift and release\u003c\/td\u003e\n\u003ctd\u003e600 × 300 × 1500 mm\u003c\/td\u003e\n\u003ctd\u003e45 kg\u003c\/td\u003e\n\u003ctd\u003eA manually operated testing unit featuring a latch-controlled cone release position and hand-tightened specimen clamping ring. With no electrical power or software requirements, it is a practical choice for materials testing facilities, educational laboratories, and on-site testing environments handling moderate sample volumes.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQualiGTX™ CDT C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eManual lift and release\u003c\/td\u003e\n\u003ctd\u003e450 × 350 × 1500 mm\u003c\/td\u003e\n\u003ctd\u003e45 kg\u003c\/td\u003e\n\u003ctd\u003eRetains the manual operating mechanism of the standard model within the most compact frame in the product range. With an overall width of just 450 mm, it fits easily along laboratory walls and at aisle ends, making it suitable for facilities where available floor space is limited.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eHow to Select the Right Geotextile Cone Drop Tester\u003c\/h2\u003e\n\u003cp\u003eChoosing the appropriate model depends on testing frequency, operating preferences, available utilities, and laboratory space.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFor high-volume production testing: The CDT A is the preferred option. Its automated specimen clamping, cone lifting, and release functions help minimize operator-dependent differences during extended testing sessions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFor routine laboratory and on-site testing: The CDT M provides the complete standardized test arrangement with straightforward manual operation, eliminating the need for electrical connections or software setup.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFor laboratories with limited floor space: The CDT C features a compact 450 mm-wide frame while retaining the same manual operating principle as the CDT M.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFor facilities without electrical or pneumatic connections: Either manual configuration is suitable, as both models operate entirely through mechanical action.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFor consistent results across multiple operators: The CDT A offers an advantage through automatic clamping, which maintains consistent specimen gripping pressure throughout successive tests.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Qualitest for Geotextile Cone Drop Testing?\u003c\/h2\u003e\n\u003cp\u003eQualitest North America provides testing and measurement solutions for manufacturers, quality control departments, and laboratories, supported by responsive technical assistance and calibration services. Its geotextile cone drop tester range is designed to deliver dependable test results in accordance with established testing requirements.\u003c\/p\u003e\n\u003cp\u003eFrom selecting the appropriate equipment configuration to matching testing capabilities with specimen types, applicable standards, and production demands, Qualitest helps customers identify a suitable solution. Technical support remains available throughout installation and subsequent equipment use, providing a reliable point of contact for testing requirements.\u003c\/p\u003e\n\u003ch2\u003eRequest a Quote for a Geotextile Cone Drop Tester\u003c\/h2\u003e\n\u003cp\u003eShare your expected sample volume, the applicable test standard, and your available laboratory space to receive a recommendation for the right geotextile cone drop tester. For equipment pricing, availability, and lead times, \u003ca href=\"https:\/\/qualitest.us\/pages\/contact\"\u003econtact the Qualitest team\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"manual-geotextile-cone-drop-tester","title":"Manual Geotextile Cone Drop Tester","description":"\u003ch2\u003eManual Geotextile Cone Drop Tester – QualiGTX™ CDT M\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ CDT M Manual Geotextile Cone Drop Tester evaluates the resistance of geotextiles and other geosynthetic\n    materials to dynamic perforation. It measures the diameter of the opening created when a steel cone strikes and\n    penetrates a specimen. This measurement provides a direct basis for comparing the ability of different fabrics to\n    withstand impact damage.\u003c\/p\u003e\n\u003cp\u003eDesigned for straightforward laboratory testing, the QualiGTX™ CDT M uses a fully mechanical operating system. The\n    operator secures the specimen inside the clamping ring, lifts the cone to its designated release position, and\n    activates the latch to drop it onto the center of the material. No electrical connection, sensors, or software are\n    needed. This makes the instrument ready for use after unpacking and leveling, while keeping operating requirements\n    and initial equipment costs lower than those of automated systems. It is particularly suitable for laboratories\n    processing moderate sample volumes.\u003c\/p\u003e\n\u003cp\u003eThe standard configuration includes a 45° stainless steel drop cone with a total mass of 1000 g, a 150 mm clear\n    specimen clamping ring, and a graduated measuring cone for determining perforation diameter. With overall dimensions\n    of 600 × 300 mm and a frame weight of 45 kg, the instrument fits comfortably into space-constrained materials\n    laboratories, university facilities, and on-site testing environments. An automated version is also available from\n    Qualitest for production quality control operations requiring higher testing throughput.\u003c\/p\u003e\n\u003ch2\u003eManual Geotextile Cone Drop Tester – QualiGTX™ CDT M Applications\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ CDT M supports geosynthetic material evaluation where fabrics must withstand contact with coarse,\n    angular fill during installation and service. It helps laboratories determine whether geotextiles can resist\n    localized impact damage before the surrounding structure is subjected to operational loads.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eGeosynthetic Manufacturing Quality Control: Assesses perforation resistance across production batches of\n            woven, nonwoven, and needle-punched geotextiles to maintain consistent product quality.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eProtection Geotextile Selection: Compares cushioning materials installed above and below geomembrane liners\n            by measuring the perforation produced by a concentrated impact.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eRoad and Highway Construction: Evaluates separation and stabilization fabrics intended for installation over\n            soft subgrades before aggregate layers are placed.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eLandfill and Waste Containment: Supports material selection and approval for basal lining and capping\n            systems, where protecting the liner is essential to long-term performance.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eSite and Project Laboratories: Allows incoming geotextile rolls to be checked directly at construction sites\n            without sending specimens to an external testing facility.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eUniversity and Research Laboratories: Provides a practical way to study dynamic perforation characteristics\n            and conduct geosynthetics research without the expense of automated equipment.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eRailway and Ballast Applications: Tests the ability of geotextiles beneath angular railway ballast to\n            withstand direct contact with sharp track-supporting aggregates.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eErosion Control and Riprap Works: Evaluates filter fabrics positioned beneath protective armor stone along\n            coastlines, riverbanks, and lined channels.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eDrainage and Filtration Systems: Checks whether geotextile coverings around aggregate drainage systems can\n            withstand the impact and pressure associated with backfilling.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eManual Geotextile Cone Drop Tester – QualiGTX™ CDT M Key Features\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ CDT M provides a mechanically operated solution for standardized cone drop testing. Its fixed\n    structural components maintain the critical test dimensions and operating tolerances needed for consistent\n    measurements.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eHand-Operated Cone Release: A straightforward lifting and latching arrangement gives technicians direct\n            control over specimen testing. Its mechanical design eliminates dependence on electrical power or pneumatic\n            systems.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eAccurate 45° Stainless Steel Drop Cone: Maintains the specified 45° tip angle, 50 mm maximum diameter, and\n            total mass of 1000 ± 5 g, including the guide rod, to ensure the required impact conditions.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eIncluded Graduated Measuring Cone: Supplied with a 600 g small-angle measuring cone for determining the\n            resulting perforation diameter, eliminating the need to purchase a separate measuring instrument.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eConsistent 500 mm Drop Distance: Maintains a tip-to-specimen clearance of 500 mm at the release position,\n            with a tolerance of ±2 mm, reducing variations caused by manual height adjustments.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eStandardized 150 mm Clamping Ring: Secures specimens around a consistent clear opening, ensuring the same\n            unsupported testing diameter for every measurement.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eVertical Cone Guidance: Keeps the drop cone aligned throughout its downward movement and directs the tip\n            toward the specimen center to prevent angled impacts that could affect perforation results.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eSpace-Efficient 600 × 300 mm Design: Requires minimal installation space and can be positioned beside\n            laboratory walls or at the end of existing workbenches.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eStable 45 kg Construction: Provides sufficient frame stability for repeated testing while allowing two\n            technicians to relocate the equipment when required.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eCorrosion-Resistant Stainless Steel Cone: Retains the cone's surface finish and tip geometry over extended\n            service periods, helping maintain measurement consistency.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTheory and Test Method\u003c\/h2\u003e\n\u003cp\u003eThe cone drop test evaluates how geotextile materials respond to a controlled impact under repeatable conditions.\n    During each test, a 1000 g cone is released from a fixed height of 500 mm, delivering approximately 4.9 joules of\n    impact energy to the specimen. Its 45° pointed tip concentrates this energy over a contact area of only a few square\n    millimeters, generating substantially greater localized stress than a uniformly distributed load.\u003c\/p\u003e\n\u003cp\u003eAs the cone penetrates the fabric, individual filaments stretch and shift relative to one another at their bonding\n    points. Continued loading eventually causes the fibers to rupture, allowing the cone to pass through the specimen.\n    Differences in this deformation and failure behavior determine the size of the resulting perforation.\u003c\/p\u003e\n\u003cp\u003eUnlike electronic testing systems, the QualiGTX™ CDT M determines the result through direct measurement of the\n    opening. After removing the drop cone, the technician inserts the graduated measuring cone into the perforation\n    until it makes contact with the fabric. The diameter is then read directly from the scale. Dense woven geotextiles\n    and heavy needle-punched materials generally recover around the opening, resulting in smaller measurements. Lighter\n    nonwoven fabrics tend to develop wider tears, producing larger readings.\u003c\/p\u003e\n\u003cp\u003eSpecimen support conditions also influence the measured response. The 150 mm clamping ring secures the material\n    around its perimeter while leaving the central area unsupported. This allows the specimen to deflect downward during\n    impact, simulating its behavior over a compressible subgrade. The resulting test arrangement represents a common\n    field condition in which angular aggregate falls onto geotextile during placement.\u003c\/p\u003e\n\u003cp\u003eDynamic perforation testing provides an index property for evaluating geotextile resistance to impact damage. Its\n    results are intended to complement static puncture resistance and tensile strength measurements, providing\n    additional information about material performance rather than replacing these tests.\u003c\/p\u003e\n\u003ch2\u003eManual Geotextile Cone Drop Tester - QualiGTX™ CDT M 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\u003eClamping Ring Inner Diameter\u003c\/td\u003e\n            \u003ctd\u003e150 ± 0.5 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eDrop Height (Cone Tip to Specimen)\u003c\/td\u003e\n            \u003ctd\u003e500 ± 2 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eDrop Cone Material\u003c\/td\u003e\n            \u003ctd\u003eStainless steel\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eDrop Cone Maximum Diameter\u003c\/td\u003e\n            \u003ctd\u003e50 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eDrop Cone Angle\u003c\/td\u003e\n            \u003ctd\u003e45°\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eDrop Cone Total Mass (Including Guide Rod)\u003c\/td\u003e\n            \u003ctd\u003e1000 ± 5 g\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eGraduated Measuring Cone Mass\u003c\/td\u003e\n            \u003ctd\u003e600 ± 5 g\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eCone Lifting and Release\u003c\/td\u003e\n            \u003ctd\u003eManual\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eSpecimen Clamping\u003c\/td\u003e\n            \u003ctd\u003eManual clamping ring\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eOverall Dimensions (W × D × H)\u003c\/td\u003e\n            \u003ctd\u003e600 × 300 × 1500 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eNet Weight\u003c\/td\u003e\n            \u003ctd\u003e45 kg\u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIncluded Components\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\u003eQuantity\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\u003eStainless Steel Drop Cone Assembly\u003c\/td\u003e\n            \u003ctd\u003e1\u003c\/td\u003e\n            \u003ctd\u003e45° cone angle, 50 mm maximum diameter, 1000 ± 5 g total mass including guide rod\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eGraduated Measuring Cone\u003c\/td\u003e\n            \u003ctd\u003e1\u003c\/td\u003e\n            \u003ctd\u003e600 ± 5 g small-angle cone for reading perforation diameter\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eSpecimen Clamping Ring Assembly\u003c\/td\u003e\n            \u003ctd\u003e1 set\u003c\/td\u003e\n            \u003ctd\u003e150 ± 0.5 mm clear inner diameter\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":53603115761975,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/manual-geotextile-cone-drop-test.webp?v=1794474588"},{"product_id":"compact-geotextile-cone-drop-tester","title":"Compact Geotextile Cone Drop Tester","description":"\u003ch2\u003e\u003cspan\u003eCompact Geotextile Cone Drop Tester – QualiGTX™ CDT C\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch4\u003e\u003cspan\u003eGeotextile Dynamic Perforation Tester, 1 kg Cone and 500 mm Drop Height\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ CDT C is designed to measure the resistance of geotextiles and related geosynthetic materials to damage caused by impact from a falling steel cone. During testing, a 1 kg cone is released from a fixed height of 500 mm onto a securely clamped specimen. The impact punctures the material, and the resulting hole diameter is measured to determine its dynamic perforation resistance. Smaller openings indicate better resistance to impact damage. This compact model delivers the same testing principle in the narrowest frame configuration within the Qualitest cone drop tester range.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLaboratory space is a central consideration in the CDT C design. Its supporting column is mounted on a 450 × 350 mm base, allowing installation in confined areas such as wall sections, corners, and narrow aisle spaces. With a total weight of 45 kg, the tester provides sufficient stability during repeated impacts while remaining manageable for two technicians to relocate between workstations. This makes it a practical addition to civil engineering laboratories that already accommodate compaction, sieving, and CBR testing equipment but have limited available floor space.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe testing assembly maintains the specified cone drop configuration, comprising a 45° stainless steel cone weighing 1000 g, including its guide rod, a clamping ring with a 150 mm clear opening, and a graduated measuring cone for determining the perforation diameter. Its entirely manual operating mechanism eliminates the need for electronic calibration, electrical connections, or complicated controls. The QualiGTX™ CDT C is suitable for materials testing laboratories, geosynthetic manufacturers, and project inspection facilities that require reliable perforation measurements for product deliveries and technical submissions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan\u003eCompact Geotextile Cone Drop Tester – QualiGTX™ CDT C Applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ CDT C helps laboratories and manufacturers determine how geotextile materials withstand sudden impact during handling, installation, and service. By measuring the perforation produced by a controlled cone drop, it provides comparative data for selecting protective fabrics, checking production consistency, and assessing material suitability for demanding civil engineering and environmental projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eGeotextile Compliance and Acceptance Testing:\u003c\/span\u003e\u003cspan\u003e Supports laboratory evaluation of geotextile deliveries by measuring their resistance to dynamic puncture. The results help verify material suitability before fabrics are approved for use in construction projects.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eGeomembrane Liner Protection:\u003c\/span\u003e\u003cspan\u003e Evaluates cushioning and protective geotextiles placed between geomembranes and surrounding aggregate. Comparing perforation resistance helps engineers select suitable materials for reducing the risk of liner damage from sharp stones.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eConstruction Material Inspection:\u003c\/span\u003e\u003cspan\u003e Helps identify geotextile rolls with inadequate impact resistance before installation. Testing provides an additional quality checkpoint for materials that will be covered by coarse aggregate or subjected to heavy construction activity.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eGeosynthetic Manufacturing Quality Control:\u003c\/span\u003e\u003cspan\u003e Enables manufacturers to monitor changes in dynamic perforation resistance during production. Testing woven, nonwoven, and needle-punched fabrics helps maintain consistent product performance across manufacturing batches.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eLandfill Lining and Environmental Protection:\u003c\/span\u003e\u003cspan\u003e Assesses geotextiles used in landfill basal protection, final capping systems, and leachate collection assemblies. These applications require protective fabrics capable of withstanding contact with surrounding drainage materials and other aggregates.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eRoad and Transportation Infrastructure:\u003c\/span\u003e\u003cspan\u003e Evaluates geotextile separation and stabilization layers installed over weak soil formations. The measurements help assess fabric resistance to aggregate impact during roadbed preparation, highway construction, and airfield development.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eHydraulic Engineering and Erosion Control:\u003c\/span\u003e\u003cspan\u003e Tests filter fabrics installed beneath riprap, gabions, and channel protection structures. The results help compare materials used to protect underlying soil while supporting erosion-control and hydraulic construction systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMining and Tailings Containment:\u003c\/span\u003e\u003cspan\u003e Determines the impact resistance of geotextiles used to protect containment liners in mining and tailings facilities. Testing is particularly relevant where coarse waste rock and heavy placement machinery create demanding installation conditions.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eUniversity Research and Material Development:\u003c\/span\u003e\u003cspan\u003e Provides researchers, educators, and students with a practical method for investigating dynamic puncture behavior in geosynthetic materials. Its compact footprint makes it suitable for teaching laboratories and research facilities working with limited equipment budgets.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eCompact Geotextile Cone Drop Tester – QualiGTX™ CDT C Key Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe QualiGTX™ CDT C incorporates fixed mechanical dimensions to maintain consistent testing conditions and reliable measurements. Its straightforward manual design also allows operators to complete testing through a simple, repeatable procedure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eCompact 450 mm Frame Width:\u003c\/span\u003e\u003cspan\u003e Features the narrowest frame in the Qualitest cone drop tester range, providing flexible installation options for laboratories with limited floor and workstation space.\u003c\/span\u003e\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\u003e\u003cspan\u003ePrecision 45° Stainless Steel Cone:\u003c\/span\u003e\u003cspan\u003e Maintains the specified 45° tip angle, maximum diameter of 50 mm, and total mass of 1000 ± 5 g, including the guide rod, ensuring consistent impact conditions between tests.\u003c\/span\u003e\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\u003e\u003cspan\u003eIncluded Graduated Measuring Cone:\u003c\/span\u003e\u003cspan\u003e Supplied with a 600 g small-angle measuring cone for determining perforation diameter, eliminating the need to purchase a separate measuring instrument.\u003c\/span\u003e\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\u003e\u003cspan\u003eControlled 500 mm Drop Height:\u003c\/span\u003e\u003cspan\u003e Maintains the distance between the cone tip and specimen within ±2 mm, minimizing variations caused by inconsistent height adjustments.\u003c\/span\u003e\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\u003e\u003cspan\u003e150 mm Specimen Clamping Ring:\u003c\/span\u003e\u003cspan\u003e Provides a defined unsupported testing area, maintaining consistent specimen support so measurements reflect material properties rather than changes in clamping conditions.\u003c\/span\u003e\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\u003e\u003cspan\u003eVertical Guided Column:\u003c\/span\u003e\u003cspan\u003e Controls cone movement throughout the drop and directs the impact toward the specimen center, reducing alignment errors and irregular perforations caused by angled contact.\u003c\/span\u003e\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\u003e\u003cspan\u003eFully Manual Testing Mechanism:\u003c\/span\u003e\u003cspan\u003e Operates without electricity, compressed air, or software, simplifying installation and reducing ongoing maintenance requirements to routine mechanical inspections.\u003c\/span\u003e\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\u003e\u003cspan\u003eCorrosion-Resistant Stainless Steel Components:\u003c\/span\u003e\u003cspan\u003e Protects the cone tip and specimen clamping surfaces against corrosion, helping maintain their condition and geometry during extended routine use.\u003c\/span\u003e\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\u003e\u003cspan\u003e45 kg Stable Construction:\u003c\/span\u003e\u003cspan\u003e Provides sufficient mass to minimize recoil and maintain alignment of the supporting column and clamping ring while allowing the tester to be relocated when laboratory arrangements change.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eTheory and Test Method\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eDynamic cone drop testing evaluates how a material responds when subjected to a controlled impact over a very short period. Releasing a 1 kg cone from a height of 500 mm delivers approximately 4.9 joules of impact energy to the specimen. Because the cone mass and release height remain constant throughout testing, the applied energy is consistent, allowing differences in the resulting damage to indicate variations in material resistance. The speed of loading is particularly important. Under gradual loading, fibers have time to redistribute stress throughout the fabric structure. An impact, however, applies the load rapidly, creating localized stress before the fibers can effectively redistribute it.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe cone's geometry determines how this energy is concentrated within the specimen. Its 45° included angle creates a relatively narrow contact area, initially concentrating the applied force across a region measuring only a few square millimeters. As the cone penetrates the fabric, localized stress increases, causing individual filaments to stretch, fiber bonds to separate, and the material to open along the path of least resistance. After the cone completes its movement and is withdrawn, the operator places the graduated measuring cone into the resulting opening and records the diameter at which the measuring cone seats.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSpecimen support is another important factor in obtaining representative results. The clamping ring securely holds the specimen around its perimeter while maintaining a 150 mm unsupported span. This allows the fabric to deflect downward during impact, reproducing the response of geotextile installed over a yielding subgrade rather than material supported by a rigid surface. The arrangement represents a typical field condition in which angular aggregate strikes the geotextile during placement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe resulting perforation diameter provides an index for comparing the dynamic impact resistance of different geosynthetic materials. These measurements complement static puncture resistance, tensile strength, and tear resistance results, providing additional information about material performance without replacing other mechanical tests.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eCompact Geotextile Cone Drop Tester - QualiGTX™ CDT 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\u003eClamping Ring Inner Diameter\u003c\/td\u003e\n\u003ctd\u003e150 ± 0.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrop Height (Cone Tip to Specimen)\u003c\/td\u003e\n\u003ctd\u003e500 ± 2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrop Cone Material\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrop Cone Maximum Diameter\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrop Cone Angle\u003c\/td\u003e\n\u003ctd\u003e45°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrop Cone Total Mass (Including Guide Rod)\u003c\/td\u003e\n\u003ctd\u003e1000 ± 5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduated Measuring Cone Mass\u003c\/td\u003e\n\u003ctd\u003e600 ± 5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCone Lifting and Release\u003c\/td\u003e\n\u003ctd\u003eManual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecimen Clamping\u003c\/td\u003e\n\u003ctd\u003eManual clamping ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Dimensions (W × D × H)\u003c\/td\u003e\n\u003ctd\u003e450 × 350 × 1500 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e45 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIncluded Components\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\u003eQuantity\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\u003eStainless Steel Drop Cone Assembly\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e45° cone angle, 50 mm maximum diameter, 1000 ± 5 g total mass including guide rod\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduated Measuring Cone\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e600 ± 5 g small-angle cone for reading perforation diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecimen Clamping Ring Assembly\u003c\/td\u003e\n\u003ctd\u003e1 set\u003c\/td\u003e\n\u003ctd\u003e150 ± 0.5 mm clear inner diameter\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":53603118711095,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/compact-geotextile-cone-drop-tes.webp?v=1794474904"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/collections\/geotextile-cone-drop-testers1469.webp?v=1794474203","url":"https:\/\/qualitest.us\/pt\/collections\/geotextile-cone-drop-testers.oembed","provider":"Qualitest USA LC","version":"1.0","type":"link"}