Geosynthetic Accreditation Institute
ASTM D4491
Test Method for Water Permeability of Geotextiles by Permittivity (04.08)
List of Accredited Laboratories:
- Lab. #1 – TRI Environmental Inc.
- Lab. #3 - Golder Associates Inc.
- Lab. #4 - Geosynthetic Institute
- Lab. #8 - Propex Operating Co. LLC (Performance Nonwovens
Division)
- Lab. #13 -TRI Environmental Inc. (Precision Geosynthetic
Laboratory)
- Lab. #14 - Geotechnics, Inc.
- Lab. #20 - GeoTesting Express, Inc.
- Lab. #25 - TenCate Inc.
- Lab. #29 – FITI (GSI-Korea)
- Lab. #31 - NYS DOT
- Lab. #38 - CCT Group (SAGEOS)
- Lab. #42 - NPUST (GSI-Taiwan)
- Lab. #45 - TenCate Geosynthetics Asia Sdn
Bhd
- Lab. #57 - TenCate Geosynthetics (Cornelia Lab)
- Lab. #58 - Propex Furnishing Solutions (Hazlehurst Lab)
- Lab. #65 - Bombay Textile Research Association
- Lab. #70 - RSA Geolab LLC
- Lab. #73 - Gia Loi JSC Geotextile Lab
- Lab. #74 - Agru America Inc. (SC)
- Lab. #75 - GEOMATRIX S.A.S.
- Lab. #79 - TRI Geosynthetic
Testing & Services (Suzhou)
- Lab. #80 - Texel Technical
Materials, Inc.
- Lab. #85 - Plasticos Agricolas y Geomembranas SAC
- Lab. #87 - Willacoochee Industrial Fabrics (Winfab)
- Lab. #88 - Geosynthetic
Testing Services Pvt. Ltd.
- Lab. #93 - Garware Technical Fibres
- Lab. #95 - Mexichem Colombia S.A.S. (Pavco)
- Lab. #97 - TUV SUD/PSB Pte
Ltd.
- Lab. #103 STRATA Geosystems PVT
- Lab. #104 - Advanced Terra
Testing Inc.
- Lab. #105 - Pavco Wavin
- Lab. #107 - TRI Australasia
Pty Ltd.
- Lab #121 Techfab India Industries Ltd. – Karajgam
[Method List]
[Laboratory List]