ASTM D4318 Accredited Testing Labs in United States
3 laboratories in United States are accredited by A2LA under ISO/IEC 17025 to perform ASTM D4318 testing. Most frequently tested analytes via this method in United States: California Bearing Ratio (Cbr). Accredited providers include Global Mozon Laboratory for calibration and Supporting Services, Qal-Tek Associates, International Technical Laboratory W.L.L.. Sites located in Yanbu, Idaho Falls, ID, Doha.
Accredited Labs
(A2LA Cert. No. 4218.01) Revised 12/24/2025 Page 9 of 26 Parameter/Equipment Range CMC2 (±) Comments Location9 Liquid Limit Device & Groover Cup with Hanger (Mass) Height of Drop Cup Radius Di
(A2LA Cert No. 2521.01) Revised 1/22/2026 Page 7 of 12 Parameter/Equipment Range CMC2, 4 (±) Comments Liquid Limit Device3 Up to 150 mm Up to 215 g 0.038 mm (0.0015 in) 37 mg ASTM D4318 Calipers
(A2LA Cert. No. 3937.01) 01/05/2026 Page 6 of 8 Test Method(s): Test Description(s): Soils (continued) ASTM D1883 California Bearing Ratio (CBR) of Labora
Top analytes for ASTM D4318 in United States
- California Bearing Ratio (Cbr) (1)
About ISO/IEC 17025 in United States
American Association for Laboratory Accreditation (A2LA) is the primary accreditation body issuing ISO/IEC 17025 accreditation for testing laboratories in United States.
ISO/IEC 17025 is the international standard for the competence of testing and calibration laboratories. Accreditation to this standard provides independent confirmation that a laboratory operates a quality management system and is technically competent to produce valid results within its declared scope.