Oakton* Water Proof DO 300 meters

. Waterproof and dust proof with IP67 rating, and it floats
. No meter warm-up required, so you can take DO measurements right away
. Low-maintenance probe comes with 10 or 25 ft length cable
. Memory stores and recalls up to 50 readings plus temperature
. Real-time clock stamps stored data and calibration data with date and time
. Key in salinity and pressure manually; meter automatically calculates offset values
. Automatic temperature compensation (ATC)
. Dual display shows mg/L (ppm) or % saturation plus temperature (°C/°F selectable)
DO Meter Kit: Includes 500 ml of electrolyte solution, 5 replacement membranes, membrane replacement tool, rinse bottle and foam-lined hard carrying case.