SICCODE.comSIC LookupI Services87 Engineering, Accounting, Research, Management, and Related Services873 Research, Development, and Testing ServicesSIC 8734
SIC Code 8734 – Testing Laboratories
Official 4-digit SIC code Source: OSHA SIC Manual Updated Nov 13, 2026
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Which businesses belong in SIC 8734?
Usually classified in SIC 8734
- Assaying services
- Automobile proving and testing grounds
- Calibration and certification (testing)
- Dosimetry, radiation
- Film budge service (radiation detection)
Usually classified elsewhere
- Medical Laboratories 8071 · Medical Laboratories
Official definition for SIC 8734 - Testing Laboratories
Establishments primarily engaged in providing testing services.
Source: OSHA SIC Manual
Companies in SIC 8734 - Testing Laboratories
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|---|---|---|---|---|
| 21Ct Inc Austin, TX | ||||
| Indiana Packers Delphi, IN | ||||
| M And O Installation Co Cordova, IL |
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21Ct Inc · Austin, TX
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Indiana Packers · Delphi, IN
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Key facts for SIC 8734 - Testing Laboratories
- SIC code
- 8734
- Official title
- Testing Laboratories
- Scope
- OSHA SIC Manual, establishment-level
- Division
- I Services (70–89)
- Industry group
- 873 Research, Development, and Testing Services
- Official source
- OSHA SIC Manual
- Where SIC is used
- Used in SEC filings, government forms, and business lists. See which agencies still use SIC codes →
SIC Classification Hierarchy
Four official SIC levels, plus a more detailed commercial classification level.
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Industry · Official 4-Digit 8734 Testing Laboratories
One example classification path is shown. Other branches may exist. The 6-digit Marketing Level is a commercial extension, not an official SIC classification.
Other codes in Industry Group 873: 8731 · Commercial Physical and Biological Research 8732 · Commercial Economic, Sociological, and Educational Research 8733 · Noncommercial Research Organizations
More specific segments in SIC 8734
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4,263 U.S. companies across 55 segments · Segment codes are 6-digit marketing categories that extend the official 4-digit SIC code. They are not official SIC codes.
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Example companies in SIC 8734
See how SICCODE.com evaluates businesses using documented activities and official SIC definitions. Select a company to review its classification and the reasoning behind it.
5,095 verified U.S. companies
- Miracles Can Happen Brooklyn, NY View classification →
- Mason Electric Co Sylmar, CA View classification →
- Sorenson Genomics And Forensic Salt Lake City, UT View classification →
- Geochemical and Environmental Research Group College Station, TX View classification →
- Sound Management Las Vegas, NV View classification →
- St Clair Hospital Lab Services Bridgeville, PA View classification →
- Duncan Co. Seymour Santa Barbara, CA View classification →
- Alta Analytical Laboratory San Diego, CA View classification →
NAICS, ISIC and NACE Rev. 2.1 crosswalk for SIC 8734 - Testing Laboratories
Correspondences in NAICS, ISIC and NACE Rev. 2.1 (via ISIC) for SIC 8734 - Testing Laboratories. These mappings do not replace the official SIC definition.
| System | Code | Title |
|---|---|---|
| SIC This page | 8734 | Testing Laboratories |
| NAICS | 541380 | Testing Laboratories Testing Laboratories |
| NAICS | 541940 | Veterinary Services Veterinary Services |
| ISIC Rev. 4 | 7120 | Technical Testing And Analysis Technical Testing And Analysis |
| ISIC Rev. 4 | 7500 | Veterinary Activities Veterinary Activities |
| NACE Rev. 2.1 (via ISIC 7120) | 71.20 | Technical testing and analysis Technical testing and analysis |
| NACE Rev. 2.1 (via ISIC 7500) | 75.00 | Veterinary activities Veterinary activities |
Source: Eurostat, NACE Rev. 2.1 to ISIC Rev. 5 correspondence; United Nations Statistics Division, ISIC Rev. 4 to ISIC Rev. 5 correspondence table.
Sources for SIC 8734
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Official classification source U.S. Occupational Safety and Health Administration.
Standard Industrial Classification Manual (1987), SIC 8734. OSHA SIC Manual → -
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About this classification
This page combines the official SIC definition with classification analysis, crosswalks, and SICCODE.com commercial data. Classifications are reviewed regularly by the Industry Classification Review Team.