Dissolved Oxygen Meters

YSI 55 Dissolved Oxygen & Temperature Meter

The field-proven and easy to use YSI 55 D/O Instrument measures dissolved oxygen in mg/L, percent saturation and temperature. The YSI 55 has a bright backlit display, automatic push-button calibration, low-battery indicator, and automatic temperature (ATC), salinity, and manual altitude compensation. The tough, watertight IP-65 rated case withstands the rigors of field work and includes a built-in storage chamber to protect the probe when not in use. The weighted probe sinks easily and is available with four cable lengths, 12, 25 or 50 feet. The meter is supplied with 6 AA alkaline batteries & replacement D/O membrane kit. Also available is the YSI 55D with a detachable probe cable assembly.

Specifications