PSC B504: SPECIAL STUDIES/ANALYSIS- CHEMICAL/BIOLOGICAL — Federal Procurement Code

B5 - SPECIAL STUDIES - NOT R and D L1: Professional Services

Description

Chemical/Biological Studies and Analysis

Suggested adjacent classifications

PSC codes describe what the government buys. These related classifications help connect procurement codes to industries, commodities, and trade workflows.

Related NAICS industries

325

Chemical Manufacturing

3251

Basic Chemical Manufacturing

32518

Other Basic Inorganic Chemical Manufacturing

325180

Other Basic Inorganic Chemical Manufacturing

Related UNSPSC categories

20122308

Slickline chemical cutters

24111805

Chemical tanks

25101706

Fire fighting chemical truck

40142011

Chemical hose

Official data

Feature	Description
Official name	Product Service Codes (PSC)
Maintained by	U.S. federal acquisition community / GSA PSC Manual
Purpose	Classifies what the government buys: products and services
Primary use	Federal procurement reporting, contract categorization, spend analysis
Code type	Mixed/unspecified

When do you need PSC B504?

1 Use PSC B504 when identifying the product or service category on a U.S. federal contract.

2 Use it when filtering opportunities or spending data in SAM.gov, FPDS, or USASpending.

3 Use it when comparing a procurement category against related NAICS industries or UNSPSC commodities.

4 Use it when a contracting workflow needs the purchased item classification rather than the supplier industry code.