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Registers collected 2026-08-22.See collection dates

ASTM C138 Accredited Testing Labs Worldwide

24 accredited laboratories in 2 countries hold ASTM C138 in their ISO/IEC 17025 scope. Primary accreditors include American Association for Laboratory Accreditation. In the register, ASTM C138 scope entries most often cover Compressive Strength, Density, Air Content in Concrete, Aggregates, Drinking water.

Total labs
24
Countries
2
Top matrix
Concrete
15 labs

Available in 2 Countries

Top matrices for ASTM C138

Top analytes for ASTM C138

  • Compressive Strength (7)
  • Density (3)
  • Air Content (2)
  • Air Voids (1)
  • Bulk Density (1)
  • Resistance To Degradation (1)
  • Solids (1)

Sample labs

Terradyne Engineering
Houston, TX, US

ASTM C138/C138M* Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M* Slump of Hydraulic-Cement Concrete ASTM C172/C172M* Sampling Freshly Mixed Concrete ASTM C174/C174M Measuring Thickness of Con

The Murillo Company
Houston, TX, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C174/C174M Measuring Thickness of Conc

HTS, Inc. Consultants
Houston, TX, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C1731 Air Content of Freshly Mixed Con

International Technical Laboratory W.L.L.
Doha, QA

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling of Freshly Mixed Concrete ASTM C231/C231M1 Air Content of Freshly Mix

Materials Testing & Consulting
Olympia, WA, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C173/C173M1 Air Content of Freshly Mix

IP Concrete Testing and Inspection
Ozone Park, NY, US

ASTM C138/C138M* Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete

Professional Service Industries
Tukwila, WA, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C1731 Air Content of Freshly Mixed Con

UES PROFESSIONAL SOLUTIONS 44
Houston, TX, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C173/C173M1 Air Content of Freshly Mixed

Alliance Geotechnical Group Houston
Houston, TX, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C173/C173M1 Air Content of Freshly Mi

Fenagh Engineering and Testing
Kent, WA, US

ASTM C138* Density (Unit Weight) Yield and Air Content of Concrete ASTM C143* Slump of Hydraulic Cement Concrete ASTM C172* Sampling Freshly Mixed Concrete ASTM C231* Air Content of Freshly Mixed Concrete by the Pressure Method ASTM C61

Fenagh
Round Rock, TX, US

ASTM C1381 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C1431 Slump of Hydraulic-Cement Concrete ASTM C1721 Sampling Freshly Mixed Concrete ASTM C1731 Air Content of Freshly Mixed Concrete by the Volume

Megan, LLC dba Fairfield
Bridgeport, CT, US

ASTM C138/C138M* Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M* Slump of Hydraulic-Cement Concrete ASTM C172/C172M* Sampling Freshly Mixed Concrete ASTM C173/C173M* Air Content of Freshly Mix

Doha Technical
Mesaieed, QA

ASTM C138/C138M Test Method for Slump of Hydraulic Cement Concrete ASTM C143/C143M Standard Practice for Sampling Freshly Mixed Concrete ASTM C172/C172M Air Content of Freshly Mixed Concrete by the Pressure Method ASTM C231/C231M1 Test M

Earth Engineering
Houston, TX, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C1731 Air Content of Freshly Mixed Co

TGI Geotechnics Inc. dba TGI Engineering & Consulting
Suite U Houston, TX, US

ASTM C138/C138M Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M Slump of Hydraulic-Cement Concrete ASTM C172/C172M Sampling Freshly Mixed Concrete ASTM C192/C192M Making and Curing Concrete Test

Otto Rosenau & Associates
Seattle, WA, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete

Alliance Laboratories, Inc.
Houston, TX, US

ASTM C138/C138M* Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M* Slump of Hydraulic-Cement Concrete ASTM C172/C172M* Sampling Freshly Mixed Concrete ASTM C173/C173* Air Content of Freshly Mixed

Atlas Technical
Lead, SD, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C231/C231M1 Air Content of Freshly Mixed

HRF Services
Store Front Hewlett, NY, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C173/C173M1 Air Content of Freshly Mix

Eustis Engineering
Houston, TX, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C173/C173M1 Air Content of Freshly Mix

Tolunay-Wong Engineers
Corpus Christi, TX, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C1731 Air Content of Freshly Mixed Co

Ninyo & Moore Geotechnical & Environmental Sciences Consultants
Houston, TX, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C173/C173M1 Air Content of Freshly Mixed

Atlas Technical Consultants
Houston, TX, US

ASTM C138/C138M1 Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C173/C173M1 Air Content of Freshly Mixe

Atlas Technical Consultants LLC.
Redmond, WA, US

ASTM C138/C138M1 Density (Unit Weight), Yield, & Air Content (Gravimetric) of Concrete ASTM C143/C143M1 Slump of Hydraulic-Cement Concrete ASTM C172/C172M1 Sampling Freshly Mixed Concrete ASTM C173/C173M1 Air Content of Freshly Mixed