UNSPSC 41115604: pH electrodes

UNSPSC 41115604 pH electrodes is a Commodity code that encompasses laboratory analytical instrumentation and sensors used in water quality monitoring and environmental compliance testing. State and local governments procure pH electrodes and related water-quality sensing equipment primarily to support regulatory monitoring at municipal water treatment facilities, wastewater treatment plants, and groundwater monitoring programs. The City of Palm Bay's ITB 19-ITB-26 for laboratory testing services illustrates the operational context: the City contracted for analytical testing across three wastewater treatment facilities, two water treatment facilities, groundwater monitoring wells, and industrial pretreatment programs, with unit prices for pH and related field measurements (pH, specific conductance, temperature, turbidity) listed at $0 when calculated in-field but performing essential gatekeeping functions for the downstream laboratory analysis cascade. Water and wastewater utilities are the primary issuing bodies under this code, though environmental and public health agencies also solicit for monitoring equipment. Municipal water departments and regional water authorities represent the core buyer base.

Recent activity concentrates in Florida and Michigan. The City of Palm Bay (Brevard County) issued ITB 19-ITB-26 in April 2026 for laboratory testing services encompassing 188 line items across water, wastewater, groundwater, and industrial pretreatment testing, with three bids received ranging from $80,872 to $107,946; the incumbent was Advanced Environmental Laboratories, Inc. The City of Bradenton issued a notice of intent to award (26038NT) in July 2026 to The Avanti Company for WRF level sensors and controllers under a sole-source procurement grounded in the vendor's exclusive representation agreement with McCrometer, Inc., the manufacturer of required flowmeters and sensing products. A University of Wisconsin-Whitewater RFB (2026-UWWTW-01224-RFB) posted in February 2026 sought an oxygen consumption monitor with response due February 20, 2026, though the solicitation does not clarify whether pH electrodes are directly involved. The code shows consistent but episodic activity tied to municipal utility compliance cycles rather than continuous procurement demand.