YSI is a developer and manufacturer of sensors, instruments, software, and data collection platforms for environmental water quality monitoring and testing. Reaching beyond our products, we build relationships with our customers through our dedicated customer service, including technical applications and service support.
Laboratory meters for dual or multiparameter combinations of pH, ORP, conductivity, BOD and ISEs
Handheld dissolved oxygen and pH or ORP meter
Digital NitraVis® UVVIS sensor for Nitrate and TSS with UltraClean technology.
YSI ISA - Instrumentos e