NGI Inc.
5373 W Sam Houston Pkwy N, Suite 245, 77041, Houston, TX, United States
Visit website- Accredited standards
- 24
- A2LA certificate
- 1
- Site in our directory
- 1
What this lab is accredited for
Our reading of the A2LA scope: each standard once, with its official name where we have checked it.
Only this lab. Searches the 24 standard numbers and the 0 official names we hold. When no standard matches, it searches the method text of every scope line.
ASTM24
ASTM D854
ASTM D1140
ASTM D2216
ASTM D2435
ASTM D2487
ASTM D2850
ASTM D2974
ASTM D4015
ASTM D4186
ASTM D4253
ASTM D4254
ASTM D4318
Show all 24
ASTM D4373
ASTM D4542
ASTM D4648
ASTM D4767
ASTM D6528
ASTM D6913
ASTM D7181
ASTM D7263
ASTM D7928
ASTM D8296
ASTM G51
ASTM G57
ASTM D854; ASTM D1140; ASTM D2216; ASTM D2435; ASTM D2487; ASTM D2850; ASTM D2974 – Method A; ASTM D4015; ASTM D4186; ASTM D4253; ASTM D4254; ASTM D4318; ASTM D4373; ISO/IEC 17025:2017
ASTM D4542 – Method B; ASTM D4648; ASTM D4767; ASTM D6528; ASTM D6913; ASTM D7181; ASTM D7263; ASTM D7928; ASTM D8296; ASTM G51; ASTM G57
Read from the A2LA scope document we downloaded on 2026-03-14. Register refreshed 2026-11-06.
Scope as published by A2LA
3 lines
ISO/IEC 17025
Active6415.01
The scope document we hold says it is valid until 2027-12-31.
Accredited scope, certificate 6415.01
| Line | Method | Matrix | Range |
|---|---|---|---|
| 1 | ASTM D854; ASTM D1140; ASTM D2216; ASTM D2435; ASTM D2487; ASTM D2850; ASTM D2974 – Method A; ASTM D4015; ASTM D4186; ASTM D4253; ASTM D4254; ASTM D4318; ASTM D4373; ISO/IEC 17025:2017 | Soil | - |
| 2 | ASTM D4542 – Method B; ASTM D4648; ASTM D4767; ASTM D6528; ASTM D6913; ASTM D7181; ASTM D7263; ASTM D7928; ASTM D8296; ASTM G51; ASTM G57 | Soils; Fine-Grained Clayey Soil; Cohesive Soil | - |
| 3 | Extracted from the scope document; tables may not line up. View scope for the original. For the tests to which this accreditation applies, please refer to the laboratory’s Geotechnical Scope of Accreditation.
Accredited Laboratory
A2LA has accredited
NGI, INC.
Houston, TX
for technical competence in the field of
Geotechnical Testing
This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017
General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates
technical competence for a defined scope and the operation of a laboratory quality management system
(refer to joint ISO-ILAC-IAF Communiqué dated April 2017).
Presented this 17th day of November 2025.
_______________________
Mr. Trace McInturff, Vice President, Accreditation Services
For the Accreditation Council
Certificate Number 6415.01
Valid to December 31, 2027 | ||
Ranges are reproduced from the accredited scope document as published, and only where we found that range printed in the document for the line. Otherwise the cell reads “See scope document”. An absent range means the register did not state one. Line numbers are ours, for cross-reference; they follow the order of the scope document.
Location
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Accreditation data refreshed from the A2LA register on .
This page mirrors a public register. For a purchasing, audit or regulatory decision, confirm against the A2LA entry linked above.