PSC M1JB

Overview

The Product and Service Code (PSC) system standardizes how the U.S. federal government classifies products and services for procurement, supporting consistent entry in FPDS/SAM, spend analysis, and reporting. PSCs and their guidance are maintained in the PSC Manual published on Acquisition.gov. The PSC M1JB is defined in the manual as "Operation of Testing and Measurement Buildings" and is used in FPDS element 8A to indicate that the predominant scope of a contract action is operation of those buildings. ¹

What this PSC covers

• Facility operations for testing and measurement buildings (daily operations and management).
• Building utilities, environmental systems, and life‑safety systems.
• Grounds, custodial services, and routine facility housekeeping.
• Facility security, access control, and site access management.
• Support for building-specific infrastructure and space management.

Specific "Includes" or "Excludes" statements for M1JB are not itemized in the PSC Manual. Not specified by official sources ¹.

Related NAICS and PSC codes

Type | Code | Descriptor

• | - | - PSC | M1JA | Operation of Museums and Exhibition Buildings PSC | Y1JB | Construction of Testing and Measurement Buildings PSC | Z1JB | Maintenance of Testing and Measurement Buildings

The construction and maintenance PSCs above appear adjacent to M1JB in the PSC Manual service-code listings, reflecting the manual’s grouping of related building construction, operation, and maintenance PSCs. ¹

How this PSC is recorded and used in federal data

Agencies record the PSC in FPDS data element 8A to identify the predominant product or service procured under a contract action; environmental attributes and other reporting fields are recorded in separate FPDS elements (for example, 8L for environmental attributes). The PSC Manual describes these reporting expectations and the role of the PSC as the primary identifier of "what" was purchased. ¹

Frequently asked questions

• What does PSC M1JB represent?
  PSC M1JB is the Product Service Code for "Operation of Testing and Measurement Buildings." Use this PSC when the predominant service being acquired is the operation and management of testing and measurement facilities; it is entered in FPDS element 8A for reporting purposes. ¹

• How do I distinguish M1JB from construction or maintenance PSCs?
  Use the construction PSC Y1JB when the primary work is building construction and Z1JB when the primary work is building maintenance or repair. Choose the PSC that represents the predominant contract deliverable. ¹

• Is there an official "Includes/Excludes" list for M1JB?
  The PSC Manual lists M1JB by name but does not provide itemized "Includes" or "Excludes" for this specific code in the published manual. Not specified by official sources. ¹

• Where do I find authoritative guidance for choosing PSCs for FPDS reporting?
  The PSC Manual on Acquisition.gov is the authoritative source for PSC definitions, reporting guidance, and procedures for changes. Consult the manual for formal policy, FPDS element descriptions, and official updates. ¹

Useful resources

• G2X — PSC M1JB page: https://app.g2xchange.com/psc/M1JB
• Product and Service Codes (PSC) Manual (PDF) — Acquisition.gov ¹

References

1. Product and Service Codes (PSC) Manual (April 2025 PDF). https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf