HM DIGITAL AP-1 Handheld TDS Meter Tester With Large LCD Screen Includes ATC Temperature Reading Magnetic Body Testing For Hydroponics Gardening Aquariums Reefs Pools Spas Water Treatment Drinking Pure Filter system SPECIFICATIONS TDS Range: 0-5000 ppm (mg/L) Temperature Range: 0-80 deg c; 32-176 Degree Fahrenheit Resolution: 1 ppm Temperature Resolution: 0.1 deg c / Fahrenheit Accuracy: +/- 2% EC-to-TDS Conversion Factor: NaCl (avg. 0.5) Calibration: Digital calibration by push button. Housing: Water-resistant Power source: 1 x 3V button cell(model CR2032) Dimensions: 15 x 2.8 x 1.3 cm (5.9 x 1.1 x .5 inches)
