PRODUCT SPECIFICATIOIN
Measures from 0-999ppm
accuracy:reading +-2%,+-2ppm
Battery: 2x1.5V(Button Cell)
size:155x31x23mm(6.1X1.2x0.9in)
Total Dissolved Solids(TDS) are the total amount of mobile charged ions,including salts or metals dissolved in a given volume of water. TDS,which is based on conductivity,is expressed in parts per million(ppm) or milligrams per liter(mg/L).TDS includes any inorganic element present other than the pure water molecule(H2O) and suspended solids.TDS affects drinking water quality consumption.For drinking,the lower TDS level of the water,the better for your health.
The U.S.EPA's Maximum Contaminant Levels of TDS for human consumption is 500 ppm.
Features

 Voltage: CR2032 Battery,DC 3V
Show temperature 0~99°C at accuracy:±3°C

 Shut off automatically after 30 seconds
TDS data accuracy: ±2%
Press on/off button 3 seconds for manual off
1000 hours for continuous testing
Hold the TDS data automatically
Clear the TDS data to zero for each test
TDS data range: 0~9999 ppm
Factory calibrated
Auto temperature compensation from 5~50°C

 1 years warranty