UNSPSC 12165303: Molecular sieve

A molecular sieve is a material with pores (very small holes) of uniform size. These pore diameters are similar in size to small molecules, and thus large molecules cannot enter or be adsorbed, while smaller molecules can.

UNSPSC 12165303 Molecular sieve, a Commodity code, covers specialized laboratory and analytical materials used in water quality testing, environmental monitoring, and forensic analysis by state and local water departments, environmental protection agencies, public health laboratories, and university research facilities. State and local governments procure molecular sieves and related laboratory consumables as components of larger analytical systems—particularly for water purification, chromatography, air quality monitoring, and specialized chemical analysis supporting compliance with EPA and state environmental regulations.

The issuing bodies soliciting under this code span water utilities (City of Fort Worth, City of Dallas, Hillsborough County, City of Tucson, City of St. Petersburg), state environmental and health agencies (Oregon Health Authority Public Health Laboratory, Colorado Department of Public Health and Environment), county water authorities (Great Lakes Water Authority in Michigan), and university research and analytical facilities (University of Wisconsin-Madison, University of Wisconsin-Whitewater, University of Texas System, Texas State University). Recent activity shows no opportunities directly tagged to UNSPSC 12165303; instead, the code appears in the taxonomy but the actual procurement records in the source reflect a broader laboratory supplies and equipment market encompassing consumables, instrumentation, and related services. Representative recent solicitations include water quality and environmental testing purchases (St. Petersburg's BOD/CBOD automated analyzer via RFQ, Hillsborough County's deionized water system maintenance via sole-source procurement, City of Fort Worth's digestion block and mercury analyzer requests via RFQt), forensic and proficiency testing materials (City of Austin's DNA quantification kits via RFQ, University of Wisconsin proficiency testing samples via RFB, Colorado's evidential breath analyzer calibration simulators via sole-source), and broad laboratory consumables frameworks (City of Dallas' 36-month ID/IQ master agreement for laboratory equipment and supplies, City of Salem's lab consumables bid). Geographic activity is distributed across Texas (Dallas, Fort Worth, Austin, Weslaco), Florida (St. Petersburg, Hillsborough County, Tampa), Oregon (Salem, State Public Health Laboratory), Colorado (Denver), Wisconsin (Madison, Whitewater), Arizona (Tucson), Michigan (Great Lakes region), and the broader United States through university and multi-jurisdiction systems.