NIGP 19051: Heat Transfer Media, Liquid

NIGP 19051 Heat Transfer Media, Liquid is an Item code covering copper sulfate products—both crystalline and liquid formulations—that state and local governments procure for water treatment, industrial cooling systems, and related applications requiring heat-transfer or algaecide functionality. The code attracts solicitations from county governments and special-purpose water or utility districts seeking reliable, recurring supplies on flexible, as-needed terms. Pasco County, Florida and similar jurisdictions issue RFQs or indefinite-quantity agreements to establish vendor rosters for these chemical inputs, which are typically purchased against standing allocations rather than one-time bids.

Recent activity centers on Florida. Pasco County issued RFQ RFQFP261004 on June 3, 2026, requesting proposals for large copper sulfate crystals and liquid copper sulfate on an as-needed basis, with responses due June 26, 2026. The county indicated intent to contract with one or more vendors under an indefinite-quantity arrangement but did not disclose estimated value, contract term, or evaluation criteria in the public notice. No other recent opportunities appear in the source.