Science At Your FingertipsThe PURAtest TDS Meter is a professional level water test meter that fits in your pocket! TDS testing is a great tool for drinking water, water filtration and purification, hydroponics (test your nutrients), aquariums, RO/DI systems, pools and spas, and more. A TDS meter typically displays the TDS in parts per million (PPM). For example, a TDS reading of 1 ppm would indicate there is 1 milligram of dissolved solids in each kilogram of water and 0 ppm being pure H2O. A TDS Meter indicates the Total Dissolved Solids (TDS) of a solution, i.e. the concentration of dissolved solids in it. Since dissolved ionized solids such as salts and minerals increase the conductivity of a solution, a TDS meter measures the conductivity of the solution and estimates the TDS from that.

Features

• Great for checking your tap water quality, or knowing when to change a filter. 
• Accurate Readings: Measurement range of 0-9990 ppm and ±2% highly accurate and quick readings
• Data Hold Function: Freeze the measurement to view it out of the water
• Automatic Shut-Off: For lower power-consumption for years of reliable measurement
• Compact-Size: Lightweight, handheld design; factory calibrated; CE/FCC/ROHS 
• Quality Assured: Includes 1-Year warranty
• Note: The meter does not test for biological contaminants.
  
  

Specifications:

• Hold Function: Saves measurements for convenient reading and recording
• Auto Shut-Off Function: Meter turns off after 8 minutes of non-use to conserve batteries
• Dual range: Measures from 0-999ppm, with a resolution 1ppm, from 1000 to 9990ppm
• The resolution is 10 ppm, indicated by drinking *10 symbol
• Factory calibrated.
• Range: 0-9990ppm
• Accuracy: +/-2%
• Battery: 2*1.5V(AG 13 button cell)
• Size: 155 x 31 x 23 mm
• Weight:76g