Mudder Digital TDS Meter with Temperature Monitor, Water Quality Tester with Range of 0-9990 ppm

Dual TDS Meter allows you to measure TDS and Temperature level, at any time and any places.

HOW TO CALIBRATE

The meter take Virtual resistor calibration, It is convenient. In normal, it doesn't need to calibrate. If you want more accurate, you can calibrate it follow below:
Step 1: You need one accurate meter as sample, and make up 342ppm NaCl solution (or you can use the TDS calibration fluid)
Step 2:Pull sample meter and this meter in 342ppm NaCl solution, set this meter
Step 3: Hold TEMP button 3-5 second until the record flash on the screen
Step 4: TEMP button is down, and HOLD button is up, adjust the record the same as the sample meter

TIPS

Once the readout stabilizes(in 10 second),hold button to view out of the water
• If the tester displays a flashing "X10" icon, multiply the reading by 10
• Don't drop the entire tester in the water or dip beyond the maximum 2" level
• Tester is not meant to be used in hot water (More than 99 degrees)
• How to Clear: Press "ON/OFF" twice, clear the data for each test, if you want test continuously
Specifications

Measure Range: 0-9990 ppm; 0-99°C; 32-212°F
Accuracy: 2% full scale, ±2℉; ±1℃
Auto shut-off: 10 minutes
Automatic Temperature Compensation: 0-50℃/ 122℉
Battery: 2 X 1.5V (LR44 Included)
Size: 156 X 30X20 mm/6 X1.2 X0.8 inch
Package include: 1 TDS meter, 1 Instruction (new packing or old packing shipped randomly)