UNSPSC 41115615: pH controller

A type of device that changes and appropriately adjusts the hydrogen ion concentration.

UNSPSC 41115615 pH controller is a Commodity code covering chemical products used to calibrate and maintain water quality monitoring equipment in municipal operations. The City of Austin, Texas is actively procuring under this code for buffer solutions, pH reference standards, and related calibration chemicals used with Hydrolab and In-Situ Sondes — instruments that measure pH, turbidity, conductivity, temperature, and dissolved oxygen in water systems. State and local water utilities and environmental departments are the primary buyers of products in this category, soliciting calibration and maintenance chemicals as part of routine water quality monitoring programs. Pricing typically must be all-inclusive of shipping, administrative overhead, and labor, with as-needed ordering rather than firm purchase commitments.

The City of Austin IFB 6300 BYS1059, posted July 13, 2026 with bids due August 13, 2026, is the representative recent opportunity under this code. The solicitation covers eight specified chemical items including pH 7.00, 10.00, and 4.01 buffer solutions, conductivity standards, ultra-pure deionized water, pH reference solution, redox buffer, and sensor storage solution. Both a Small Business Preference program and a Local Business Preference program apply to the Austin procurement; the latter targets entities with headquarters in the Austin-Round Rock-San Marcos Metropolitan Statistical Area across five counties. Delivery is FOB destination prepaid, and mandatory insurance includes Workers' Compensation, Commercial General Liability, and Business Automobile Liability. The source shows limited recent activity — this single Austin procurement is the only state or local opportunity documented for the code — suggesting that pH controller procurement remains episodic and concentrated among municipalities with formal water quality monitoring programs.