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HM Digital TDS-4 Pocket Size TDS Tester Meter with 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy

4.3 out of 5 stars 1,177 ratings

$20.46
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  • plastic
  • Imported
  • This TDS tester is ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver
  • ATC (Automatic Temperature Compensation) ; Advanced microprocessor technology
  • The Sleek design of the TDS-4 is perfect for personal or commercial use
  • Alkaline batteries included
  • Hold Function: Freeze the measurement to view it out of the water.
  • Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries
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Customer ratings by feature

Easy to use
4.1 4.1
Easy to read
4.0 4.0
Accuracy
3.9 3.9

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Product Description

Product Description

Product Description: How Pure is Your Water? A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the TDS-4 can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million). The lower the TDS level, the purer the water, with 0 ppm being pure H2O. The TDS-4 is great for checking your tap water quality, or knowing when to change a filter. (The meter does not test for biological contaminants.) The TDS-4 is a great tool for drinking water, water filtration and purification, hydroponics (test your nutrients), colloidal silver, aquariums, RO/DI systems, pools and spas, and more.

From the Manufacturer

TDS Tester with Advanced Microprocessor Technology.

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Warranty & Support

Product Warranty: For warranty information about this product, please click here [PDF ]

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HM Digital TDS-4 Pocket Size TDS Tester Meter with 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy


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Customer reviews

4.3 out of 5 stars
4.3 out of 5
1,177 global ratings

Top reviews from the United States

Reviewed in the United States 🇺🇸 on March 24, 2022
Reviewed in the United States 🇺🇸 on July 5, 2022
Reviewed in the United States 🇺🇸 on June 11, 2014
Reviewed in the United States 🇺🇸 on February 17, 2012
206 people found this helpful
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Top reviews from other countries

R. Bourne
1.0 out of 5 stars You only pay for HM Digital name!!
Reviewed in Canada 🇨🇦 on February 5, 2019
One person found this helpful
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Gil
5.0 out of 5 stars Good tool to have
Reviewed in Canada 🇨🇦 on March 28, 2017
D.S.Naidu
1.0 out of 5 stars Defective Product
Reviewed in Singapore 🇸🇬 on January 8, 2021
Todd T
5.0 out of 5 stars Very Accurate
Reviewed in Canada 🇨🇦 on July 24, 2020
Lorne Randall
5.0 out of 5 stars Easy to use
Reviewed in Canada 🇨🇦 on February 24, 2022