HM Digital Handheld TDS Meter

A TDS Meter indicates the Total Dissolved Solids (TDS) of a solution. In a way, you might say that a TDS meter is really a "conductivity meter", as It will measure all negative (anions) and positively charged ions (cations) that are present in water. These ions may include compounds such as sodium, magnesium, phosphate, silicate, calcium, and nitrate, to name a few.

Those of us who keep fishes that prefer water of lower pH/hardness will appreciate utilizing a TDS meter to quickly and efficiently check the quality of the water being produced by our reverse osmosis/deionization unit. If you are using a TDS or conductivity meter to monitor the performance of an RO/DI system, then the measured value should drop to at or near zero. Higher values indicate that the DI resin in the unit is becoming saturated and needs replacement. Of course, it's also useful for checking the water in your aquarium as well, and it's so easy to use (and dare we say...fun?) that you'll want to test frequently! 

The HM Digital TDS meter provides a fast and dependable way to measure the total dissolved solids or conductivity in your water samples. Temperature is compensated automatically to ensure the readings are consistent to the standard or reference temperature. It features direct probe connection, automatic calibration, and automatic temperature calibration for reliable, accurate readings for our applications!

Operating and routine maintenance  of the HM Digital TDS Meter is really easy! And, with the touch of a button, you'll also get an amazingly accurate temperature reading! A very nice bonus!
This is a great piece of equipment for any hobbyist who uses RO/DI water in their aquarium setups!

Specifications
  • Range: 0 to 9990 ppm (mg/L)
  • Temp Range: 0-80°C
  • Accuracy: ±2% 
  • Calibration: Factory calibrated with NaCl 342 ppm, adjustable
  • Calibration: automatic, at 1382 ppm
  • Temperature Compensation: Automatic, 0 to 80°C (32 to 140°F), ß=2%/°C
  • Battery Type / Life: 2 x 1.5V button cell (357A) / approx. 1,000 hours
  • Dimensions: 15.5 x 3.1 x 2.3 cm (6.1" x 1.25" x 1.0")
  • Weight: 76.5 g (2.7 oz.) (with case)

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