PSC H391 Inspection—Fuels, Lubricants, Oils, and Waxes

Federal Category 18.4: Equipment Related Services Quality Control

Inspection and Laboratory Services (except medical/dental): Fuels, Lubricants, Oils, and Waxes

Includes: Commercial Testing and Laboratory Services

Excludes: Medical and Dental Laboratory Services

Possible NAICS Codes
541990 – All Other Professional, Scientific, and Technical Services
541380 – Testing Laboratories
454310 – Fuel Dealers
561210 – Facilities Support Services
541330 – Engineering Services
333132 – Oil and Gas Field Machinery and Equipment Manufacturing
926150 – Regulation, Licensing, and Inspection of Miscellaneous Commercial Sectors
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
562910 – Remediation Services
561790 – Other Services to Buildings and Dwellings