Carry one meter, not three! Measure pH, dissolved oxygen (mg/L, ppm or % saturation) and temperature (°C or °F selectable). The completely waterproof pH/DO 300 does the work for you; automatically calculating barometric pressure and salinity offset values while insuring high accuracy with automatic temperature compensation and independent 100%, zero, and offset adjustment capabilities. Keypad adjustable backlit display-ideal for dimly lit areas. Auto-buffer recognition for pH calibration. Features include Hold function, Ready indicator, and automatic shutoff after 30 minutes of nonuse. Their waterproof construction lets you thoroughly wash the meter to maintain working condition. Each pH/DO 300 Meter includes an easy-to-service dissolved oxygen/temperature probe, pH electrode (both with 10-ft cables), electrolyte solution and batteries. The pH/DO 300 Meter Kit contains pH/DO 300 meter, DO probe and pH probe (10-ft cables), "Singles" calibration pouches (three each pH 4.01; 7.00; 10.01); 500 mL of electrolyte solution, five replacement membranes, membrane installation tool, rinse bottle and foam-lined carrying case. Dimensions: 7.5"L x 3.5"W x 1.75"D. Shpg wt: 1.3 lbs.
