UNSPSC 41113820: Aggregate specific gravity tester

A tester that measures the specific gravity and absorption rate of thick aggregates. It is used for the analysis test of un-solidified concrete washing and it is structured of prevision specific gravity scale, steel wire for specific gravity measurement and water tank.

UNSPSC 41113820 Aggregate specific gravity tester is a Commodity code for laboratory and field testing instruments used to measure and analyze soil and aggregate properties. State and local governments procure this equipment as part of broader materials testing and geotechnical services contracts, though recent solicitations show the code's scope conflates with adjacent testing disciplines — concrete compressive strength, asphalt gradation, embankment compaction observation, and field density gauging. Issuing bodies include state departments of transportation, county public works and utilities departments, and municipal utilities and engineering offices. Recent solicitations reveal that governments acquire specific gravity testers, Proctor soil compactors with integrated soil analyzers, and cone penetrometer systems as part of multiyear on-call or project-based testing service contracts, often bundled with qualifications-based RFQ or RFP processes tied to contractor prequalification. Payment structures vary — some governments issue task orders against fee schedules, while others negotiate unit prices or lump-sum bids for single-purpose purchases.

Recent activity spans Texas, Georgia, Michigan, Utah, and Florida. The Texas Department of Transportation posted RFQ 601340000067218 on October 6, 2026, seeking a Proctor Soil Compactor with Soil Analyzer and related equipment, with responses due October 27, 2026, via the Bonfire Hub platform; vendors must register on the Centralized Master Bidders List and hold appropriate NIGP codes. Henry County, Georgia and the City of Augusta, Georgia both issued RFQs in August 2026 (due September 9 and September 11, respectively) for on-call geotechnical and materials testing services, with the Henry County scope explicitly requiring GDOT prequalification and encompassing compressive strength testing, asphalt analysis, and compaction testing across a five-year term in Augusta's case and annual terms in Henry County's. The Michigan Department of Transportation awarded a Notice of Intent to Award on July 22, 2026 to Applied Research Associates, Inc. for a truck-mounted Cone Penetrometer Test sounding unit at $1,011,529.00 under RFP 260000002268. Salt Lake County Contracts and Procurement issued a materials-only RFQ on August 25, 2026 for gabion baskets and riprap to support a Rose Creek erosion-control project, with bid responses due September 10, 2026.