Geosynthetic Accreditation Institute


ASTM D6567
Test Method for Measuring Light Penetration of Turf Reinforcement Mat (TRM)


List of Accredited Laboratories:

  • Lab. #1 - TRI/Environmental
  • Lab. #4 - Geosynthetic Institute
  • Lab. #8 - SI Geosolutions (Performance Nonwovens Div.)
  • Lab. #13 - Precision Geosynthetic Labs, CA

[Method List]

[Laboratory List]

[GAI page]