HANNA HI 98128 pHep5 pH/Temperature Tester

This durable, waterproof tester measures pH and temperature (in C or F). The tester is designed to float and features automatic temperature compensation, automatic calibration, a HOLD function, efficient two-button operation, and a stability indicator. Other features include automatic shut-off to conserve battery power, display of battery percentage during startup, and a Battery Error Prevention System. Includes tester, pH electrode, electrode removal tool, batteries, and instructions. Features : Waterproof and designed to float Automatic Temperature Compensation HOLD button to freeze readings on the display BEPS Alerts the user of low battery power that could adversely affect readings. Specifications : Range: pH, -2.00 to 16.00 pH; Temperature, 23.0F to 140.0F (-5.0C to 60.0C) Resolution: pH, 0.01 pH; Temperature, 0.1F (0.1C) Accuracy at 20C: pH, 0.05 pH; Temperature, 1F (0.5C) pH Calibration: Automatic, at 1 or 2 points with 2 sets of standard buffers (pH 4.01/7.01/10.01 or pH 4.01/6.86/9.18) Temperature Compensation: Automatic Battery: Four 1.5V batteries (included) Battery Life: Approximately 300 hours of continuous use, auto-off after 8 minutes of non-use Operating Environment: 23F to 122F (-5C to 50C), RH max 100% Dimensions: 6.4 x 1.6 x 1.0 Weight: 3.5 oz.