UNSPSC 12142208: Calibration sources

UNSPSC 12142208 Calibration sources (Commodity) covers EPA-certified gas mixtures — specifically calibration gases, low-range and high-range audit gases prepared to EPA Protocol G1 standards — that state and local governments procure to support continuous emissions monitoring systems (CEMS) and air-quality compliance testing. These are specialty industrial gases traceable to NIST Standard Reference Materials or approved equivalents, delivered and maintained on five-year usage agreements with firm, fixed pricing and stringent inventory and service-level requirements including 24-hour reorder capability and hardcopy and online certificates of accuracy. The issuing bodies procuring under this code are typically county utilities and public works agencies responsible for stationary-source emissions monitoring at cogeneration facilities, treatment plants, or other regulated installations.

The County of Orange, California is the only recent activity visible in this dataset. In late September 2026, Orange County Public Works posted a competitive IFB (solicitation 0803068001RE) seeking EPA Protocol Calibration and Audit Gases for delivery to its Central Utility Facility supporting a gas-turbine CEMS under South Coast Air Quality Management District (SCAQMD) compliance rules, with bids due August 10, 2026 and a 5% local small-business (OCLSB/DVBE) preference available. The contract comprises 13 line items of calibration and audit gases priced per 144-cubic-foot cylinder, with the County reserving the right to extend the award as a cooperative vehicle to other municipalities and public utilities. Response-date metadata in the source appears inconsistent (posted September 2026, due August 2026), so timing should be verified directly with the County. California is the only state represented in recent opportunities under this code.