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Geosynthetic Clay Liner Permeameters

Geosynthetic Clay Liner Permeameters
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Geosynthetics and Geotextile Testing Equipment
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Geosynthetic Clay Liner Permeameters

Geosynthetic Clay Liner Permeameters | ASTM D5887 Index Flux Testing for Bentonite Barriers

Geosynthetic clay liner permeameters measure how much water passes through a hydrated sodium bentonite barrier under a controlled pressure differential. GCL producers, containment laboratories, and construction quality assurance teams use the result to check permeability against a project specification. ASTM D5887 is the reference index flux method for this work. Qualitest North America offers two configurations in the QualiGTX™ CLP family.

Both units accept ø70 mm specimens, apply differential pressure up to 50 kPa, and time the collection interval automatically. They differ in specimen holder material and in how closely each one holds permeant temperature. That second point carries weight, since water viscosity shifts with temperature and moves the reported coefficient. The comparison below sets the two side by side.

Why Choose Qualitest for Your Geosynthetic Clay Liner Permeameter

Qualitest North America supplies testing and measurement equipment to laboratories, quality teams, and manufacturers, backed by responsive technical support and calibration service. The geosynthetic clay liner permeameter range is built for reliable, standards-driven results, so you can source confidently from a single partner. Our team helps you match the right configuration to your samples, applicable standards, and throughput, then supports you through installation and beyond.

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Tell us your specimen type, the standard you report against, and your expected throughput, and we will recommend the right geosynthetic clay liner permeameter. Contact the Qualitest team for pricing, configuration options, and lead times.

Applications

Permeability testing follows a bentonite barrier from the production line through delivery inspection and into the design validation that supports a containment permit.

  • GCL Manufacturing Quality Control: batch testing that tracks seepage performance roll to roll and catches bentonite distribution problems before shipment.
  • Landfill Cells and Caps: confirms that delivered barrier material meets the permeability figure written into the containment design.
  • Delivery Conformance Testing: independent verification of incoming rolls against project specifications before crews unroll them on the subgrade.
  • Mining and Tailings Containment: qualifies bentonite blankets used beneath leach pads, tailings dams, and process water ponds.
  • Reservoirs, Canals, and Retention Basins: evaluates seepage control for water storage and conveyance projects.
  • Secondary Containment and Lagoons: supports barrier selection under tank farms, fuel terminals, wastewater basins, and agricultural storage.
  • Research and Academic Laboratories: supports studies on bentonite hydration, cation exchange, and long-term barrier durability.

Geosynthetic Clay Liner Permeameter Range

Two configurations share the same test geometry and pressure capability, then diverge on materials, temperature control, and console.

ModelSpecimen HolderPermeant Temperature ControlDescription
QualiGTX™ CLP304 stainless steelIntegrated reservoir tank as standard; temperature-controlled supply available on custom orderStainless steel clamping resists corrosion from mineralized permeant and holds its geometry across long test series. A 10-inch touchscreen carries setup, readout, and automatic timing. Suits high-throughput production QC and laboratories running aggressive or mineral-rich permeant water.
QualiGTX™ CLP CHigh-strength aluminum alloyTemperature-controlled supply with both heating and cooling, plus reservoir tank (custom configuration)Aluminum alloy clamping keeps the assembly lighter for frequent specimen changes. The heating and cooling circuit holds permeant at a set point rather than tracking laboratory ambient. Suits laboratories reporting permeability corrected to a reference temperature.

Shared across both models: ø70 mm specimen diameter, 50 kPa maximum applied pressure, automatic digital timing, color touchscreen control, and a floor-standing column frame at 110 kg.

How to Choose the Right Geosynthetic Clay Liner Permeameter

  • For production QC running many specimens per week: choose the QualiGTX™ CLP. Stainless steel clamping holds its sealing geometry through repeated cycles.
  • For mineral-rich or aggressive permeant water: choose the QualiGTX™ CLP, since 304 stainless resists corrosion better than aluminum in wet service.
  • For results reported at a reference temperature: choose the QualiGTX™ CLP C. Its heating and cooling circuit removes viscosity drift as a source of scatter between runs.
  • For laboratories without a stable ambient: choose the QualiGTX™ CLP C, which brings permeant to a set point from either direction.
  • For frequent specimen changes by one technician: the aluminum alloy holder on the CLP C reduces handling weight.
  • For permeation with leachate or chemical solutions: ASTM D6766 covers that work and calls for a different configuration, so tell our team which permeant you plan to use.
  • If you are unsure which method your permit requires: send us the specification and we will confirm the configuration that matches it.

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Geosynthetic Clay Liner Permeameters | Available Products

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Geosynthetic Clay Liner Permeameters

Compact Geosynthetic Clay Liner Permeameter

QualiGGTE CLP C GCL permeability coefficient apparatus tests bentonite liners at 50 kPa with temperature-controlled permeant supply. Request a quote…
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