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YSI* 550A Dissolved Oxygen Instruments
Rugged field-worthy instrument for measuring dissolved oxygen. The new YSI 550 DO meter features a waterproof, impact-resistant case and innovative field-replaceable DO electrode modules. Measure dissolved oxygen and temperature simultaneously using YSI's proven polarographic technology for oxygen along with precision thermistors.
. Waterproof meets IP67 Specifications
. Screw-on cap membranes
. Over 2000 hours battery life
. Calibrate in either mg/L or % saturation
. User-selectable temperature units (°C or F°)
. Three-year warranty on the instrument and one-year on the DO module