YSIŽ Model 55 Dissolved Oxygen Meter

The Model 55 is a complete system for DO measurements in a conveniently sized hand-held meter. The ergonomic housing is splashproof and the complete system floats in water.

Large back lit LCD is easy to read and 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. The polarographic probe is field serviceable and can be purchased with your choice of 12, 25 or 50 foot cable.