PH meter, TDS meter, ec meter, ORP meter, PH CONTROLLER, ORP controller

AP-1  AquaPro Water Quality Tester (TDS)
FEATURES
Measures total dissolved solids (TDS) and temperature.
Automatic Temperature Compensation (ATC)
Water-resistant housing
Measurement Range: 0-5000 ppm
Digital Calibration (push button)
Auto-off function, data-hold function and low-battery indicator.
Display: large and easy-to-read LCD screen includes simultaneous temperature reading.
Factory Calibrated: The AquaPro is calibrated with a 342 ppm NaCl solution. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver.
Includes a cap and batteries
Comes in a retail-oriented package

SPECIFICATIONS
TDS Range: 0-5000 ppm (mg/L)
Temperature Range: 0-80 ºC; 32-176 ºF
Resolution: 1 ppm; Temp. resolution is 0.1 ºC/F
Accuracy: +/- 2%
Calibration: Digital calibration by push button.
Housing: Water-resistant
Power source: 1 x 3V button cell (included) (model CR2032)
Dimensions: 15 x 2.8 x 1.3 cm (5.9 x 1.1 x .5 inches)
Weight: 42.5 g (1.5 oz)