Geosynthetic Accreditation Institute


ASTM D1603
Test Method for Carbon Black in Olefin Plastics (08.01)


List of Accredited Laboratories:

  • Lab. #1 - TRI/Environmental
  • Lab. #3 - Golder Associates
  • Lab. #5 - NTH Consultants, Ltd.
  • Lab. #13 - Precision Geosynthetic Laboratories, CA
  • Lab. #14 - Geotechnics, Inc.
  • Lab. #18 - Shaw Environmental & Infrastructure, Inc.
  • Lab. #20 - GeoTesting Express
  • Lab. #26 - Agru America Inc.
  • Lab. #30 - Columbia Geosystems
  • Lab. #34 - GSE Lining Technology, Inc. (Richey Road Lab)
  • Lab. #35 - GSE Lining Technology, Inc. (Hardy Street Lab)
  • Lab. #38 - SAGEOS/CTT Group
  • Lab. #40 - GSE Lining Technology (Kingstree, SC)
  • Lab. #42 - NPUST (GSI-Taiwan)
  • Lab. #47 - Precision Geosynthetic Laboratories, TX
  • Lab. #49 - Engepol Geossinteticos Ltda.
  • Lab. #53 - Industries Polytex Ltda.
  • Lab. #54 - Hancor Inc.

[Method List]

[Laboratory List]

[GAI page]