UNSPSC 25191803: Diesel smoke tester

A device that measures the smoke discharged by vehicle diesel engines using light penetration and reflection.

UNSPSC 25191803 Diesel smoke tester (Commodity) encompasses vehicle diagnostic and testing services that state and local governments procure for fleet maintenance and compliance verification, with recent solicitations showing emphasis on multi-system diagnostic work for school district vehicle fleets. The code sees activity primarily from school districts and municipal fleet departments that manage light-, medium-, and heavy-duty vehicle inventories spanning multiple manufacturers. Work being solicited includes transmission diagnosis and repair, fuel system services, drivetrain diagnostics, exhaust system inspection, brake system service, EGR system diagnostics, body electronics testing, starting system repair, DEF system maintenance, and charging system service, typically priced on hourly labor rates with firm pricing for one year. Vendors must hold minimum three years' experience in automotive diagnostic services, maintain appropriate business licenses and insurance coverage, and comply with state affidavits regarding foreign countries of concern and labor coercion prohibitions. Some issuers encourage participation from certified small business enterprises, women-owned, minority-owned, or service-disabled veteran-owned businesses with preference applied in certain procurement contexts.

Hillsborough County Public Schools (Florida's seventh-largest school district) represents the dominant recent buyer under this code, issuing three separate ITQs in July 2026 for Chevrolet vehicles diagnostic services (ITQ 26252-ITQ-DST, due July 10, 2026), Dodge vehicle diagnostic services (ITQ 26249-ITQ-DST, due July 7, 2026), and Isuzu and Hino vehicles diagnostic and repair services (ITQ 26307-ITQ-DST, due July 29, 2026). HCPS manages approximately 1,000 vehicles across its fleet and solicits these services through invitation-to-quote notices with awards to lowest responsive and responsible bidders, sometimes dividing awards among multiple qualified vendors. The City of Tallahassee Fleet Management Department has also posted activity under the code, specifically an IFB (079-26-KM, due June 23, 2026) for annual dielectric inspection and testing of insulated aerial devices including bucket trucks, boom trucks, digger derricks, and truck-mounted cranes, with a three-year basic contract term plus two optional one-year renewals. Florida shows the strongest recent concentration of activity under this code, with secondary activity in Texas.