Aqua Designs Amano pH Test Kit

HM Digital Pocket-Sized TDS Meter w/ Thermometer

Product Code: HB00045
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HM Digital Pocket-Sized TDS Meter w/ Thermometer

What should the TDS level of my water be?

There is no specific level nor, 'good or bad' answer to this question.  Generally speaking, for drinking water, a lower level of TDS (purer water) is preferred.  The U.S. EPA, all U.S. states, the World Health Organization (WHO) and most nations put maximum limitations on TDS allowed in drinking water.  These limitations are typically 500 or 1000 ppm, but they do vary.  There is no known minimum for drinking water.

Besides drinking water, a TDS level is specific for each application and particular usage.  Though humans generally prefer purer water for their health, fish and plants, for example, require water with widely varying TDS levels, most of which are higher than healthy human drinking water.  If you are using a meter to test the water pertaining to a particular device, object or operation, contact the manufacturer of that object. For example, if you are using the meter to test the efficacy of a water filtration system, contact the manufacturer of that system for preferred TDS levels. If you are testing the water for a pool, plants, fish, etc. contact a specialist for your specific application, or the manufacturer of additives or nutrients.



The smallest and lightest TDS meter on the market.

Sleek design is perfect for personal or consumer use.

Advanced microprocessor technology.

Hold Function: saves measurements for convenient reading and recording.

Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries.

Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1 ppm. From 1000 to 9990 ppm, the resolution is in increments of 10 ppm, indicated by a blinking 'x10' image.

Display: large and easy-to-read LCD screen.

Recommended for fresh water aquariums & aquaculture, horticulture & hydroponics, and pools & spas.

Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.


 Range: 0 - 9990 ppm (mg/L)

Resolution: 0-999: 1 ppm; 1000-9990 10 ppm (indicated by a 'x10' icon)

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 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)

UPC: 891144000182