HM Digital TDS-4TM Pocket Size TDS & Temp Meter


Sold By: : Groundworks SKU: 4377CL Category:


The HM Digital TDS-4TM Pocket Size TDS & Temp Meter is ideal for all water purification applications, drinking water testing, pools & spas, fresh water aquariums, hydroponics, and colloidal silver. Excellent for both personal or commercial use.


Includes an internal digital thermometer (celsius).
The smallest and lightest TDS meter available on the market.
Hold Function – Saves measurements for convenient reading and recording.
Auto-off function – Turns off meter after 10 minutes of non-use to conserve batteries.
Dual Range – Measures from 0 – 999 ppm, with a resolution of 1ppm. From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking ‘x10’ image.
Factory Calibrated: HM Digital meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.
Recommended for fresh water aquariums & aquaculture, horticulture & hydroponics, pools & spas and water cooler professionals.
Need help deciding which meter is right for you? View the HM Digital TDS/EC Meter Selection Guide.


TDS Range: 0-9990 ppm (mg/L)
Temp. Range: 0-80 degrees Celsius
Resolution: 1 ppm, 1 degree Celsius
Accuracy: +/- 2%
Conversion Factor: NaCl (avg. 0.5)
ATC: Built-in sensor for Automatic Temperature Compensation of 1 to 50 degrees Celsius (33 to 122 degrees Farenheit)
Power source: 2 x 1.5V button cell batteries (included) (LR44 or equivalent)
Battery life: 1000 hours of usage
Dimensions: 14 x 2.3 x 1.5 cm (5.5 x .9 x .55 inches)
Weight: 34g (1.2 oz)


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