Geosynthetic Accreditation Institute

---

ASTM D5494
Test Method for the Determination of Pyramidal Puncture Resistance of Unprotected and Protected Geomembranes (04.08)

---

List of Accredited Laboratories:

• Lab. #1 - TRI Environmental Inc.
• Lab. #4 - Geosynthetic Institute

---

[Method List]

[Laboratory List]