Geosynthetic Accreditation Institute


ASTM D2122
Standard Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings


List of Accredited Laboratories:

  • Lab. #1 - TRI/Environmental, Inc.
  • Lab. #42 - NPUST (GSI-Taiwan)
  • Lab. #50 - Advanced Drainage Systems
  • Lab. #53 - Polytex S.A.
  • Lab. #56 - Industrial Polytex Ltda.
  • Lab. #75 - GEOMATRIX S.A.S.

[Method List]

[Laboratory List]