Geosynthetic Accreditation Institute


ASTM D1238
Standard Test Method for Flow Rates of Thermoplastics by Extrusion Plastometer


List of Accredited Laboratories:

  • Lab. #1 - TRI/Environmental
  • Lab. #3 - Golder Associates
  • Lab. #4 - Geosynthetic Institute
  • Lab. #13 - TRI Environmental (Precision Geosynthetics Laboratory)
  • Lab. #14 - Geotechnics, Inc.
  • Lab. #20 - GeoTesting Express
  • Lab. #25 - Ten Cate Inc. (Pendergrass Lab)
  • Lab. #26 - Agru America Inc.
  • Lab. #29 - FITI (GSI-Korea)
  • Lab. #34 - GSE Lining Technology, Inc. (Richey Road Lab)
  • Lab. #38 - SAGEOS/CTT Group
  • Lab. #40 - GSE Environmental (Kingstree, SC)
  • Lab. #49 - Engepol Geossinteticos Ltda.
  • Lab. #50 - Advanced Drainage Systems Inc.
  • Lab. #51 - Solmax International Inc.
  • Lab. #53 - Polytex SA
  • Lab. #55 - Atarfil Geomembranes S.L.
  • Lab. #56 - Polytex SA (Chile)
  • Lab. #57 - Ten Cate Geosynthetics (Cornelia Lab)
  • Lab. #59 - Firestone Building Products
  • Lab. #60 - Polytex S.A. (Peru)
  • Lab. #61 - Raven Industries Inc.
  • Lab. #62 - Solmax International Asia
  • Lab. #64 - Agru America (NV)
  • Lab. #65 - Bombay Textile Research Assoc.
  • Lab. #66 - Rowad International
  • Lab. #69 - GSE Lining Technology (Thailand)
  • Lab. #71 - Plásticos Agrícolas y (Piura, Peru)
  • Lab. #81 - GSE Lining Technology GmbH
  • Lab. #83 - GSE Lining Technology - Egypt
  • Lab. #85 - Plásticos Agrícolas y (Tacna, Peru)
  • Lab. #86 - BOSTD Geosynthetics

[Method List]

[Laboratory List]