UNSPSC 41104930: Molecular sieve

A material device containing tiny pores of a precise and uniform size that is used as an adsorbent for gases and liquids. Molecules small enough to pass through the pores are adsorbed while larger molecules are not. It differs from a common filter in that it operates on a molecular level.

UNSPSC 41104930 Molecular sieve is a Commodity code that names a specific filtration and separation component, though recent state and local opportunities tagged to this code show limited alignment with the nominal scope. The two most recent opportunities sourced under this code involve fire and rescue equipment procurement and oyster hatchery filtration components — neither of which explicitly names molecular sieves as a primary deliverable. State and local buyers using this code appear to span county and state agencies, with Fulton County, Georgia and the State of Mississippi as recent solicitors. When molecular sieves do appear in state and local procurement, they are typically embedded within larger filtration, air purification, or specialized laboratory equipment systems rather than procured as standalone consumables, which may explain why opportunities tagged to the code often cover broader equipment families or maintenance services.

The geographic activity centers on Georgia and Mississippi based on the most recent postings. Fulton County, Georgia issued an IFB (PE66062NONST2027000000447) on July 10, 2026, due July 28, 2026, for fire and rescue tools, equipment, and self-contained breathing apparatus maintenance, which includes breathing air systems that may incorporate molecular sieve drying components within the scope of SCBA servicing and preventive maintenance. The State of Mississippi issued an IFB (9280-26-R-IFBD-00047) on May 11, 2026, due May 29, 2026, for filtration components and associated items serving an oyster hatchery and research center, a procurement that could involve molecular sieves as part of a water or air filtration train. The limited volume of recent opportunities and the mismatch between the code's nominal scope and actual solicitation content suggest this is a quiet code for state and local procurement — molecular sieve demand at this tier appears sporadic and often incidental to larger equipment or systems purchases.