Geosynthetic Accreditation Institute


ASTM D1621
Standard Test Method for Compressive Properties of Rigid Cellular Plastics


List of Accredited Laboratories:

  • Lab. #1 - TRI/Environmental
  • Lab. #3 - Golder Associates
  • Lab. #4 - Geosynthetic Institute
  • Lab. #13 - TRI Environmental (Precision Geosynthetics Laboratory)
  • Lab. #38 - SAGEOS/CTT Group
  • Lab. #41 - SGI Testing Services, LLC
  • Lab. #42 - NPUST (GSI-Taiwan)
  • Lab. #70 - RSA Geolab, LLC
  • Lab. #86 - BOSTD Geosynthetics Qingdao Ltd.

[Method List]

[Laboratory List]