HM Digital TDS-3 Handheld TDS Aquarium Meter & Thermometer with Carrying Case

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Help make sure your finned friends’ watery habitat stays safe and comfortable with the HM Digital TDS-3 Handheld TDS Meter with Carrying Case. Engineered for simplicity and ease of use, this professional-quality water testing instrument measures Total Dissolved Solids (TDS) from 0 to 9990 ppm, and can also display water temperature from 32 to 175 degrees Fahrenheit. TDS represents the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water, and are directly related to the purity of water and the quality of water purification systems. The rugged design and included vinyl carrying case with belt clip help make this unit a favorite among fish hobbyists, as well as hydroponic gardeners, water treatment professionals and more.

Key Benefits
  • Help keep your fresh and saltwater aquariums and reef tanks safe and comfortable for their finned inhabitants.
  • Professional-grade water testing instrument is engineered for simplicity and ease of use.
  • Measures Total Dissolved Solids (TDS) from 0-9990 ppm and water temperature from 32-175 degrees Fahrenheit.
  • Rugged design and vinyl carry case with belt clip helps ensures long-lasting reliable use, while the auto-off function helps preserve battery life.
  • Ideally suited for use with hydroponics & gardening, pools & spas, water ionizers, drinking water and more.
What's Included

Carrying case with belt clip.

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  • Item Number
  • Dimensions
    1.25 x 1 x 6.1 inches
  • Weight
    2.7 ounces
  • Aquarium Type

    Freshwater, Saltwater

Details Specifications
Calibration Factory Calibrated with a 342 ppm NaCl solution. (Meter can be re-calibrated with a mini-screwdriver)
TDS Range 0 – 9990 ppm (mg/L)
Temp. Range 0 – 80 degrees Celsius
Resolution 0-999: 1 ppm; 1000-9990: 10 ppm (indicated by a ‘x10’ icon)
Temperature Resolution 0.1 degree Celsius (Celsius only)
Accuracy +/- 2%
EC-to-TDS Conversion Factor NaCl (avg. 0.5)
ATC Built-in sensor for Automatic Temperature Compensation of 1 to 50 degrees Celsius (33 to 122 degrees Fahrenheit)
Power source 2 x 1.5V button cell batteries (included) (LR44 or equivalent)
Battery life 1000 hours of usage
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