Geosynthetic Accreditation Institute


ASTM D1238
Test Method for Flow Rates of Thermoplastics by Extrusion Plastometer (08.01)


List of Accredited Laboratories:

  • Lab. #1 - TRI/Environmental
  • Lab. #3 - Golder Associates
  • Lab. #4 - Geosynthetic Institute
  • Lab. #5 - NTH Consultants, Ltd.
  • Lab. #13 - Precision Geosynthetics Laboratories
  • Lab. #14 - Geotechnics, Inc.
  • Lab. #19 - HTS Inc. Consultants
  • Lab. #20 - GeoTesting Express
  • Lab. #25 - TC Nicolon
  • Lab. #26 - Agru America Inc.
  • Lab. #29 - FITI
  • Lab. #34 - GSE Lining Technology, Inc. (Richey Road Lab)
  • Lab. #35 - GSE Lining Technology, Inc. (Hardy Street Lab)
  • Lab. #37 - GSE Chile
  • Lab. #38 - SAGEOS/CTT Group
  • Lab. #40 - GSE Lining Technology, Inc. (Kingstree, SC)
  • Lab. #48 - Tenax Corporation
  • Lab. #49 - Engepol Geossinteticos Ltda.
  • Lab. #50 - Advanced Drainage Systems Inc.
  • Lab. #51 - Solmax International Inc.
  • Lab. #53 - Industries Polytex Ltda.
  • Lab. #54 - Hancor Inc.
  • Lab. #55 - Atarfil Geomembranes S.L.
  • Lab. #56 - Industrial Polytex Ltda. (Chile)
  • Lab. #59 - Firestone Building Products
  • Lab. #60 - Polytex S.A. (Peru)
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[Method List]

[Laboratory List]

[GAI page]