UNSPSC 41181605: Immunonephelometer equipment

In this classification, Immunonephelometer equipment connotes a device used to that measures light scattering from antigen-antibody complexes. The concentration of these complexes may be measured by means of reflected light. A beam of light passed through a solution is scattered by the particles in suspension. The amount of light is detected by a photodetector, which converts light energy into electrical energy. The amount of electrical energy registers on a readout system such as a digital voltmeter or a recording chart.

This electrical readout is called the light-scattering value and is used to measure the concentration of antigen-antibody complexes. This generic type of device includes devices with various kinds of light sources, such as laser equipment. US FDA regulates Immunonephelometer equipment under 21 CFR 866.4540 and under FDA product code JZW.

UNSPSC 41181605 Immunonephelometer equipment is a Commodity code with virtually no recent activity aligned to its nominal scope. The most recent state and local opportunities posted under this code span research instrumentation, laboratory equipment, reagents, and scientific systems across Mississippi universities, Texas institutions, Illinois agencies, Oregon state departments, Wisconsin universities, Harris County (Texas), Escambia County (Florida), and Philadelphia — yet none of the posted solicitations reference immunonephelometers or nephelometric analysis systems. Instead, the code's recent-opportunities block contains diverse equipment ranging from unmanned aerial vehicles and microfluidics processors to X-ray diffractometers, mass flow controllers, DNA analysis systems, induction furnaces, robotic 3D printing systems, acoustic telemetry receivers, and consumables for water and bacteriological testing.

The mismatch between the code's intended scope and actual recent procurement activity suggests either systematic miscoding at source jurisdictions or that immunonephelometer purchases occur so infrequently within state and local government that they do not populate recent-opportunities records. Mississippi State University dominates the recent posting volume under this code designation, issuing multiple sole-source notices for specialized research equipment through its Office of Procurement Services, typically with objection periods of 10–15 days and estimated purchase values ranging from approximately $6,000 to $1.25 million. No competitive open-bid opportunities, RFPs, RFQs, or ITBs for immunonephelometers appear in the dataset. Business development professionals evaluating this code should verify actual procurement need through direct contact with state laboratory directors, university research administrators, and county environmental-quality departments rather than relying on recent-opportunities data to signal real market demand.