The Milwaukee MW600 PRO Portable Dissolved Oxygen meter is one of Milwaukee's most popular meters with its reliable and fast operation as well as its accuracy.The Milwaukee PRO DO Meter is preferred by people looking for lab level accuracy without the cost.DESIGN FEATURESFast, easy-to-read results with large digital LCD readoutRepeatable, accuracy to ±1.5% FSLightweight and portableSimple 2 point open air calibrationUses MA840 reinforced polarographic probe with an oxygen-permeable polytetrafluroethylene (PTFE) membrane sensor5x o-rings, membranes and one protective cap included3m probe cable for extra flexibility when testing70 hours of battery life with continuous use (battery included) with low battery warning

The Milwaukee MW605 MAX Galvanic Portable Waterproof Dissolved Oxygen meter is one of Milwaukee's most popular meters with its reliable and fast operation as well as its accuracy.The Milwaukee MW605 MAX DO Meter is preferred by people looking for lab level accuracy without the cost.The Milwaukee DO Meter is popular with everyone from field biologists, educators, fish farmers, water treatement plants and labs.DESIGN FEATURESFast, easy-to-read results with large digital LCD readoutGalvanic probe means no conditioning timeRepeatable, accuracy to ±1.5% of readingWater Proof IP 67 ratedLightweight and portableSimple 1 or 2 % saturation calibration points at 100% (water saturated air) and 0% (zero oxygen solution)Dedicated GLP key to store and recall data on system statusAvailable log space for up to 1000 recordsLogged data export via USB cableAltitude and Salinity compensationAutomatic temperature compensation °F & °CUses MA860 (included) reinforced Galvanic probe with an oxygen-permeable polytetrafluroethylene (PTFE) membrane sensor2x O-rings, membranes and one protective cap included3m probe cable for extra flexibility when testing3 x 1.5 volt akaline AA battery (battery included) approx. 200 hours of battery life with continuous use with low battery warning