YSI® Pro20 Dissolved Oxygen Meter

Hand-Held DO Instrument Ideal for Fieldwork

Features user-replaceable cables and sensors for convenience and a One Touch Cal calibration button for ease of use. Mil-spec connectors and a rubber over-molded, waterproof case make this an extremely durable unit—tough enough to withstand a 1-meter drop test! And because it’s not likely to break, you’re sure to get years of sampling out of it despite the harsh field conditions you encounter. Internal barometer provides automatic barometric pressure compensation for a high level of accuracy. Stores up to 50 data sets so there’s no need to record data on paper. Provides 8-sec. results 95% of the time! Choose a Polarographic or Galvanic sensor. Available with 4m or 10m standard cable lengths. Comes with a 3-year instrument warranty.