Geosynthetic Accreditation Institute


ASTM D6475
Test Method for Measuring Mass Per Unit Area of Erosion Control Blankets


List of Accredited Laboratories:

  • Lab. #1 - TRI Environmental Inc.
  • Lab. #4 - Geosynthetic Institute
  • Lab. #9 - Lumite Inc.
  • Lab. #13 - TRI Environmental Inc. (Precision Geosynthetic Laboratory)
  • Lab. #38 - CTT Group (SAGEOS)
  • Lab. #42 - NPUST (GSI-Taiwan)
  • Lab. #63 - TRI Environmental Inc. (TRI South Carolina)
  • Lab. #75 - GEOMATRIX S.A.S.

[Method List]

[Laboratory List]