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. #54 - Hancor Inc.
  • Lab. #56 - Industrial Polytex Ltda.

[Method List]

[Laboratory List]