Geosynthetic Accreditation Institute


ASTM D6243
Test Method to Determine the Internal and Interface Shear Resistance of Geosynthetic Clay Liners by the Direct Shear Method, [04.09]


List of Accredited Laboratories:

  • Lab. #1 - TRI Environmental Inc.
  • Lab #3 - Golder Associates
  • Lab. #4 - Geosynthetic Institute
  • Lab. #13 - TRI Environmental Inc. (Precision Geosynthetic Laboratory)
  • Lab. #14 - Geotechnics Inc.
  • Lab. #20 - GeoTesting Express
  • Lab. #38 - CCT Group (SAGEOS)
  • Lab. #41 - SGI Testing Services, LLC
  • Lab. #42 - NPUST (GSI-Taiwan)
  • Lab. #43 - Ardaman & Associates Inc.
  • Lab. #46 - TAG Environmental Inc.
  • Lab. #70 - RSA Geolab, LLC

[Method List]

[Laboratory List]