Accredited Laboratories


  • 100122 TRC Environmental Corporation - IHLAP
  • 100160 Merck & Co., Inc., Global IH Laboratory - IHLAP 
  • 100269 KAM Consultants Corporation - IHLAP, ELLAP
  • 100531 Analytics Corporation - IHLAP
  • 101097 IEA, Inc. - IHLAP
  • 101729 SRI International - IHLAP
  • 102797 Materials And Chemistry Laboratory, Inc (MCLinc) - IHLAP
  • 102992 EMSL Analytical, Inc - ELLAP, EMLAP 
  • 157714 J3 Resources, Inc. - ELLAP
  • 188863  Hayes Microbial Consulting - EMLAP
  • 189946 EMSL Analytical, Inc. - ELLAP, EMLAP


The following sets of links lead to program specific lists of AIHA Laboratory Accreditation Programs, LLC accredited laboratories. The lists are sortable on a number of headers, including State, Lab Name, Phone Number (Area Code), and Commercial Availability (fee for sampling services).  Double-clicking on a lab's name in the list will open up the details of the laboratory's scope of accreditation.


Please note that a laboratory for which a published standard method (e.g., NIOSH 7082) is listed may have been assessed and accredited for that method as modified by the laboratory, rather than as published. Always contact the laboratory to verify exact procedures and ensure suitability to your needs.







  • Industrial Hygiene Laboratory Accreditation Program (IHLAP)
  • Includes labs accredited for methods in any core program field of testing such as ICP, AA, GC, GC/MS, Ion Chromatography, UV/VIS, PCM, PLM or TEM. Additionally, specialized fields of testing requiring additional proficiency testing are also covered such as Beryllium, Pharmaceutical and Compressed Air analysis.



Unique Scopes


Search functionality: It is now possible to search our accredited laboratories by Program, Field of Testing/Matrix, or standard reference method (e.g. NIOSH 7400).


Updated: 08/01​/2014