"YSI Model 52 Dissolved Oxygen Meter"@en . . "SDN:L22::TOOL1482" . "A portable dissolved oxygen meter capable of field and laboratory measurement of dissolved oxygen and temperature in water. It comprises a membrane covered, submersible Clark-type polarographic sensor with a built-in thermistor for temperature measurement and automatic compensation. Power can be provided by an AC adapter (optional), or batteries that permit field use. Capable of detecting oxygen within the ranges 0.0 to 19.99 mg/l dissolved oxygen, and 0.0 to 199.9% air saturation. Accuracy is to within +/-0.1% of saturation value, plus probe error, plus one least significant digit for mg/l readings, and +/-0.1% of air saturation, plus probe error, plus one least significant digit for % readings. The temperature range is -5 to 45 degC, with an accuracy of +/-0.1 degC."@en . .