YSI® Model 55 Dissolved Oxygen Meters

Model 55 Dissolved Oxygen Meters Are
Small, Powerful and Perfect for Fieldwork

YSI Model 55 Dissolved Oxygen Meters are complete systems for dissolved oxygen measurements in conveniently sized, hand-held Meters. Ergonomic housing is splashproof, and the complete system floats in water.
Large, backlit LCD is easy to read. It simultaneously displays temperature in °C and dissolved oxygen in mg/L or % air saturation. All readings are automatically temperature compensated and can also be compensated for barometric pressure and salinity once the appropriate values are entered. Measures 9.5"H x 3.5"W x 2.2"D. The polarographic probe is field serviceable and may be bought with your choice of 12’, 25’ or 50'L cable. Model 55 Dissolved Oxygen Meter is sold complete with probe, cable and six AA batteries. Optional Waterproof Carrying Case (No. 9438) makes transport easy.
Probe Reconditioning Kit (No. 221306) and Replacement Membranes with Fill Solution, Pkg. of 30 (No. 221577), also available.
Please Specify Color for No. 9438: BL (black), GR (gray).