Clark Laboratories LLC

Clairton, PA Doing business as Clark Testing Clark Laboratories, LLC

Company facts

Self-certified in SAM.gov: For Profit Organization

Limited Liability Company
Entity structure: Corporate Entity (Not Tax Exempt)
NAICS codes registered in SAM.gov: 541380 Testing Laboratories and Services Primary
SAM.gov registration date: May 15, 2014
Physical address: 1801 PA-51, Clairton, PA 15025, USA
Website: clarktesting.com
Founded: 1991
Employees: 51-250
Estimated annual revenue: $10M-$50M
Industry: Industrials

Commercial & Professional Services

Professional Services
SIC code: 87 Engineering & Management Services
Profiles: LinkedIn

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Crunchbase

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Jan 30, 2026.

Clark Laboratories LLC's 2 most recent federal contract and grant awards, newest first. Amounts are dollars obligated.
Award	Agency	Obligated	Awarded
Guage installation Contract · 75D30120P08779	CDC Pittsburgh	$0	Jun 29, 2020
Lube oil testing services Contract · N6449818P5227	Naval Sea Systems Command	$2,956	Aug 15, 2018

Clark Laboratories LLC's Unique Entity ID (UEI) in SAM.gov is YJ3TP5ME4GH5.

Clark Laboratories LLC's CAGE code is 74NE9.

Clark Laboratories LLC's primary NAICS code is 541380 (Testing Laboratories and Services).

Clark Laboratories LLC's physical address in SAM.gov is 1801 PA-51, Clairton, PA 15025, USA.

Yes. Clark Laboratories LLC's SAM.gov registration is active through January 28, 2027.

Clark Laboratories LLC's most recent federal contract award is Guage installation (75D30120P08779), from CDC Pittsburgh, on June 29, 2020.

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