UNSPSC 42183031: Pseudoisochromatic plate sets

In this classification, this commodity indicates a product used as one of a set of colored plates that include some which appear isochromatic to individuals with color-vision abnormality and that are widely used as a test for color blindness in a medical setting. Most nations, for tariff and trade purposes, schedule these products under HS 901811.

UNSPSC 42183031 Pseudoisochromatic plate sets is a Commodity code under which state and local governments procure vision-screening and color-perception diagnostic equipment and related optical accessories to support educational and laboratory functions. The recent solicitation activity shows a mismatch: the code's nominal scope — pseudoisochromatic plates used in color blindness testing — does not appear directly in the posted opportunities, which instead center on microscopes, accessories, and optical lenses and frames. The Texas Comptroller of Public Accounts' cooperative purchasing solicitation (304T27490M2, due September 1, 2026) was tagged under this code but explicitly requests microscopes and related equipment for classroom and laboratory use. This indicates either broad tagging of optical and laboratory-equipment codes or a categorization inconsistency in the source system.

Activity under the code is limited in the recent record. Only two state-level opportunities appear: Texas's cooperative purchasing vehicle for microscopes and accessories, which accepts proposals through an indefinite-quantity, requirements-type agreement structure with 120-day holdover after the due date, and Michigan's RFP 250000002612 for optical lenses and frames (Notice of Intent posted July 27, 2026, with July 31, 2026 deadline), though the full scope and award details are not disclosed in the available source material. Both solicitations are state-level, not county, city, school district, or transit authority activity. Geographic coverage is limited to Texas and Michigan based on recent postings. Given the scope mismatch and minimal recent activity, this code shows little directly relevant procurement momentum for vendors specializing in pseudoisochromatic diagnostic plates.