UNSPSC 24111821: Volumetric prover tank

A tank used for calibration of large-volume liquid flow meters. Prover tanks are generally mounted on mobile trailer units that can be pulled by truck from one location to another. The tanks are made of either stainless steel or carbon steel, and are designed and built with little or no dimensional tolerances. A volumetric proving tank is a reference standard used for proving meters under test. The tank is initially calibrated by an approved testing authority using a primary reference measuring instrument traceable to national standards, to an accuracy of 0,05% or better.

UNSPSC 24111821 Volumetric prover tank (Commodity) does not reflect the actual work being solicited under this code in recent state and local opportunities. The three most recent opportunities tagged to this code involve CO2 tank rental and refill services for aquatic facilities and underground storage tank removal from a fire station — neither activity aligns with volumetric prover tanks, which are precision instruments used to calibrate flow-measurement devices. The mismatch suggests the code has been misapplied in the source data or that the tagging is incorrect, rendering this code category unsuitable for business development targeting in the near term based on these records.

State and local purchasing offices show no meaningful recent activity under this commodity code as classified. Collier County, Florida issued two Quick Quote solicitations for monthly CO2 tank rental, refill, and delivery to support pool operations at six aquatic facilities (response due dates July 8, 2026 and July 28, 2026), while the City of Meriden, Connecticut issued an ITB for removal and decontamination of a 4,000-gallon underground storage tank at a fire station facility (response due September 9, 2026). These opportunities represent the full set of recent records and do not correspond to volumetric prover tank procurement or supply.