Geosynthetic Accreditation Institute


ASTM D5993
Test Method for Measuring the Mass Per Unit Area of GCL, (04.08)


List of Accredited Laboratories:

  • Lab. #1 - TRI/Environmental
  • Lab. #3 - Golder Associates
  • Lab. #4 - Geosynthetic Institute
  • Lab. #5 - NTH Consultants
  • Lab. #13 - Precision Geosynthetic Laboratories, CA
  • Lab. #14 - Geotechnics Inc.
  • Lab. #18 - Shaw Environmental & Infrastructure, Inc.
  • Lab. #19 - HTS, Inc. Consultants
  • Lab. #20 - GeoTesting Express, Inc.
  • Lab. #22 - CETCO (Arlington Heights Lab)
  • Lab. #23 - CETCO (Fairmount Lab)
  • Lab. #24 - CETCO (Lovell Lab)
  • Lab. #29 - FITI
  • Lab. #32 - Vector Engineering, Inc.
  • Lab. #38 - SAGEOS/CTT Group
  • Lab. #43 - Ardaman & Associates
  • Lab. #46 - Bentofix Technologies, Inc.

[Method List]

[Laboratory List]

[GAI page]