Geosynthetic Accreditation Institute


ASTM D4218
Test Method for Carbon Black Content in Polyethylene Compounds by the Muffle-Furnace Technique


List of Accredited Laboratories:

  • Lab. #1 - TRI Environmental Inc.
  • Lab. #4 - Geosynthetic Institute
  • Lab. #13 - TRI Environmental Inc. (Precision Geosynthetic Laboratory)
  • Lab. #14 - Geotechnics Inc.
  • Lab. #20 - GeoTesting Express
  • Lab. #26 - Agru America Inc.
  • Lab. #34 - GSE Environmental LLC (Houston)
  • Lab. #38 - CTT Group (SAGEOS)
  • Lab. #40 - GSE Environmental LLC (Kingstree)
  • Lab. #49 - Engepol Geossinteticos Ltda.
  • Lab. #50 - Advanced Drainage Systems Inc.
  • Lab. #51 - Solmax International Inc. (Canada)
  • Lab. #53 - Polytex SA (Antofagasta Lab)
  • Lab. #55 - Atarfil Geomembranes S.L.
  • Lab. #56 - Polytex SA (Santiago Lab)
  • Lab. #59 - Firestone Building Products
  • Lab. #60 - TDM Geosintéticos S.A.
  • Lab. #61 - Raven Industries Inc.
  • Lab. #62 - Solmax International Asia (Malaysia)
  • Lab. #64 - Agru America (NV)
  • Lab. #66 - Rowad International
  • Lab. #69 - GSE Lining Technology (Thailand)
  • Lab. #70 - RSA Geolab LLC
  • Lab. #71 - Plásticos Agrícolas y Geomembranas S.A.C.
  • Lab. #72 - Tensar Corporation LLC
  • Lab. #78 - Plasticos Agricolas y Geomembranas de Mexico S.A. de C.V. (PQA)
  • Lab. #79 - TRI Geosynthetic Testing & Services (Suzhou)
  • Lab. #81 - Solmax (GSE Lining Technology GmbH-Germany)
  • Lab. #83 - Solmax (GSE Lining Technology-Egypt)
  • Lab. #84 - Owens Corning
  • Lab. #85 - Plasticos Agricolas Y Geomembranas SAC – Peru
  • Lab. #86 - BOSTD Geosynthetics Qingdao Ltd.
  • Lab. #89 - Megaplast India Pvt. Ltd.
  • Lab. #96 - Tensar Geosynthetics (China)
  • Lab. #99 - Atarfil Middle East
  • Lab. #100 - Atarfil Geomembranes USA
  • Lab. #102 - SKAPS Industries

[Method List]

[Laboratory List]