Geosynthetic Accreditation Institute

HTS Inc. Consultants
Attn: Larry McMichael
(713) 692-8373

List of Accredited Test Methods:

  • ASTM D374 - Micrometer Thickness
  • ASTM D413 - Adhesion
  • ASTM D570 - Water Absorption
  • ASTM D638 - GM Tensile
  • ASTM D751 - Thickness
  • ASTM D792 - Specific Gravity
  • ASTM D882 - Strip Tensile
  • ASTM D1004 - 90° Tear
  • ASTM D1204 - Dimensional Change
  • ASTM D1238 - Melt Flow
  • ASTM D1505 - Density Gradient
  • ASTM D1593 - PVC Thickness
  • ASTM D1621 - Core Compression
  • ASTM D2240 - Durometer
  • ASTM D3015 - C. B. Dispersion
  • ASTM D3083 - Seam Strength
  • ASTM D3776 - Mass/Unit Area
  • ASTM D3786 - Mullen Burst
  • ASTM D4218 - C. B. Content (Muffle)
  • ASTM D4437 - Field Peel & Shear
  • ASTM D4491 - Permittivity
  • ASTM D4533 - Trap Tear
  • ASTM D4545 - Factory Peel & Shear
  • ASTM D4595 - GT Wide Width Tensile
  • ASTM D4632 - Geotextile Grab
  • ASTM D4716 - Transmissivity
  • ASTM D4751 - A.O.S.
  • ASTM D4833 - Index Puncture
  • ASTM D4884 - Geotextile Sewn Seam
  • ASTM D4885 - Geomembrane Wide Width
  • ASTM D5035 - Geotextile Strip Tensile
  • ASTM D5199 - Thickness
  • ASTM D5261 - Mass/Unit Area
  • ASTM D5321 - Direct Shear
  • ASTM D5322 - 9090 Immersion
  • ASTM D5596 - C. B. Disp. Microtome
  • ASTM D5887 - GCL Flux
  • ASTM D5890 - Swell Index
  • ASTM D5891 - Fluid Loss
  • ASTM D5993 - GCL Mass Per Unit Area
  • ASTM D6243 - GCL Direct Shear
  • FTM 101C - Geomembrane Puncture (2065)

[Method List]

[Laboratory List]

[GAI page]