Products & Reviews

Portable water quality multiparameter instrument for the measurement of several critical parameters

YSI 550A Dissolved oxygen meter - Portable dissolved oxygen meter YSI 550A The YSI 550A dissolved oxygen meter features a waterproof, impact-resistant case and innovative field-replaceable DO electrode modules. Measure dissolved oxygen and temperature simultaneously using YSI's proven polargraphic technology for oxygen and YSI Precision thermistors, the world wide standard for accuracy. Features of the YSI 550A DO meter includ…