Scientific Application-Specific Countdown / Countup Timer | United, SKU TIMER-HS5, is a United Scientific Supplies product for laboratory, educational, research, or quality-control use. The Application-Specific Countdown / Countup Timer | United, is built for day-to-day scientific and classroom use. Engineered for durability in demanding industrial and laboratory environments. Constructed from high-grade materials resistant to common laboratory reagents. Precision-molded for consistent performance and repeatable results. Compatible with a wide range of standard scientific setups and apparatus. The listed specifications include pack quantity of 1, dimensions of 2.75 x 2.75 x 1.0 (in), weight of 0.2 lbs (lbs). For purchasing records, the country of origin is listed as China. The row does not identify the item as autoclavable. Related use terms in the row include timer, count. In equipment-based workflows, this item supports classroom demonstrations, laboratory setup, measurement, or sample processing according to the stated use. That depends on the procedure and material, but it is generally selected when routine bench work, classroom use, and controlled lab procedures where consistent handling matters is part of a repeat workflow. Labs pick this version when purpose-built laboratory equipment selected for its specific handling and workflow advantages matters more than using a broad general-purpose substitute. For equipment or apparatus purchasing, confirm the stated specifications, operating limits, and any product documentation required by the lab before use. The row indicates California Proposition 65 applicability, so applicable warning language should remain visible where required. United Scientific Supplies provides applicable CPSIA/CPSC compliance resources for covered items and general compliance statements for items where GCC documentation is not required.