Description
Laboratory Testing Services

Possible NAICS Codes
621511 – Medical Laboratories
541380 – Testing Laboratories and Services
334516 – Analytical Laboratory Instrument Manufacturing
561320 – Temporary Help Services
541714 – Research and Development in Biotechnology (except Nanobiotechnology)
541990 – All Other Professional, Scientific, and Technical Services
325413 – In-Vitro Diagnostic Substance Manufacturing

Description
Chemical/Biological Studies and Analysis

Possible NAICS Codes
541380 – Testing Laboratories and Services
541714 – Research and Development in Biotechnology (except Nanobiotechnology)
541990 – All Other Professional, Scientific, and Technical Services
541620 – Environmental Consulting Services
541690 – Other Scientific and Technical Consulting Services
325412 – Pharmaceutical Preparation Manufacturing
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
611310 – Colleges, Universities, and Professional Schools
325414 – Biological Product (except Diagnostic) Manufacturing
541611 – Administrative Management and General Management Consulting Services

Description
Other Environmental Services, Studies, and Analytical Support

Possible NAICS Codes
541620 – Environmental Consulting Services
562910 – Remediation Services
541380 – Testing Laboratories and Services
541690 – Other Scientific and Technical Consulting Services
541330 – Engineering Services
541990 – All Other Professional, Scientific, and Technical Services
562211 – Hazardous Waste Treatment and Disposal
115310 – Support Activities for Forestry
541611 – Administrative Management and General Management Consulting Services
481212 – Nonscheduled Chartered Freight Air Transportation

Description
Scientific Data Studies

Possible NAICS Codes
541380 – Testing Laboratories and Services
541990 – All Other Professional, Scientific, and Technical Services
541690 – Other Scientific and Technical Consulting Services
541714 – Research and Development in Biotechnology (except Nanobiotechnology)
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541620 – Environmental Consulting Services
541611 – Administrative Management and General Management Consulting Services
518210 – Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services
611310 – Colleges, Universities, and Professional Schools
813920 – Professional Organizations

Description
Water Quality Studies

Possible NAICS Codes
541380 – Testing Laboratories and Services
541620 – Environmental Consulting Services
221310 – Water Supply and Irrigation Systems
541990 – All Other Professional, Scientific, and Technical Services
541690 – Other Scientific and Technical Consulting Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541714 – Research and Development in Biotechnology (except Nanobiotechnology)
611710 – Educational Support Services
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
541330 – Engineering Services

Description
Other Quality Control, Testing and Inspection Services: Miscellaneous

Possible NAICS Codes
541380 – Testing Laboratories and Services
488390 – Other Support Activities for Water Transportation
541330 – Engineering Services
541990 – All Other Professional, Scientific, and Technical Services
541620 – Environmental Consulting Services
541350 – Building Inspection Services
541690 – Other Scientific and Technical Consulting Services
561210 – Facilities Support Services
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
237120 – Oil and Gas Pipeline and Related Structures Construction

Description
Environmental Studies and Assessments

Possible NAICS Codes
541620 – Environmental Consulting Services
541380 – Testing Laboratories and Services
562910 – Remediation Services
541611 – Administrative Management and General Management Consulting Services
541330 – Engineering Services
541690 – Other Scientific and Technical Consulting Services
541990 – All Other Professional, Scientific, and Technical Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
611710 – Educational Support Services

Includes
Laboratory Glassware; Laboratory Funnels; Laboratory Furnaces; Glass Beads; Laboratory White Sand; Litmus Paper; Paper Filters; Insect Transfixion Pins; Laboratory Glass Wool; Laboratory Furniture, except Dental Laboratory.

Excludes
Instruments covered by other classes in group 66; Dental Laboratory Equipment; Laboratory Scales and Balances; In Vitro Diagnostic Substances and Reagents.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339999 – All Other Miscellaneous Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing

Description
Other Professional Services

Possible NAICS Codes
493190 – Other Warehousing and Storage
541611 – Administrative Management and General Management Consulting Services
541990 – All Other Professional, Scientific, and Technical Services
541690 – Other Scientific and Technical Consulting Services
711510 – Independent Artists, Writers, and Performers
541330 – Engineering Services
541519 – Other Computer Related Services
611430 – Professional and Management Development Training
721110 – Hotels (except Casino Hotels) and Motels
561320 – Temporary Help Services

Description
Other Special Studies and Analysis

Possible NAICS Codes
541512 – Computer Systems Design Services
541611 – Administrative Management and General Management Consulting Services
541990 – All Other Professional, Scientific, and Technical Services
541380 – Testing Laboratories and Services
541330 – Engineering Services
541720 – Research and Development in the Social Sciences and Humanities
541620 – Environmental Consulting Services
541690 – Other Scientific and Technical Consulting Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
561611 – Investigation and Personal Background Check Services

Description
Water Quality Support Services

Includes
Includes: Industrial Investigation Surveys and Technical Support Related to Water Pollution

Possible NAICS Codes
541380 – Testing Laboratories and Services
541620 – Environmental Consulting Services
562211 – Hazardous Waste Treatment and Disposal
221310 – Water Supply and Irrigation Systems
562910 – Remediation Services
561210 – Facilities Support Services
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
924110 – Administration of Air and Water Resource and Solid Waste Management Programs
541611 – Administrative Management and General Management Consulting Services
541330 – Engineering Services

Description
Geological Studies

Possible NAICS Codes
541380 – Testing Laboratories and Services
541990 – All Other Professional, Scientific, and Technical Services
541360 – Geophysical Surveying and Mapping Services
541690 – Other Scientific and Technical Consulting Services
518210 – Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541620 – Environmental Consulting Services
611710 – Educational Support Services
611310 – Colleges, Universities, and Professional Schools
541511 – Custom Computer Programming Services

Description
Equipment and Materials Testing: Miscellaneous

Possible NAICS Codes
541380 – Testing Laboratories and Services
238220 – Plumbing, Heating, and Air-Conditioning Contractors
541330 – Engineering Services
541990 – All Other Professional, Scientific, and Technical Services
811210 – Electronic and Precision Equipment Repair and Maintenance
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
541611 – Administrative Management and General Management Consulting Services
334519 – Other Measuring and Controlling Device Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing
541620 – Environmental Consulting Services

Description
Maintenance, Repair and Rebuilding of Equipment: Instruments and Laboratory Equipment

Possible NAICS Codes
811210 – Electronic and Precision Equipment Repair and Maintenance
334516 – Analytical Laboratory Instrument Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
561210 – Facilities Support Services
541380 – Testing Laboratories and Services
334519 – Other Measuring and Controlling Device Manufacturing
334515 – Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals

Description
Engineering and Technical Services

Includes
Includes: System Engineering, Technical Assistance and Other Services Used to Support the Program Office During the Acquisition Cycle

Excludes
Excludes: Language Translation and Sign Language Interpretation (PSC R608)

Possible NAICS Codes
541330 – Engineering Services
541990 – All Other Professional, Scientific, and Technical Services
541512 – Computer Systems Design Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541690 – Other Scientific and Technical Consulting Services
541620 – Environmental Consulting Services
541611 – Administrative Management and General Management Consulting Services
541519 – Other Computer Related Services
336611 – Ship Building and Repairing
541511 – Custom Computer Programming Services