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HM Digital Hand Held TDS-3 Meter

Brand Name : HM Digital
Warranty : 12 Months

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Offer   Free Leather Casing
MRP : 1299 799
Save : 500/- (38% OFF)
Shipping Charge : 49
Shipping Area : PAN INDIA
In Stock ( 4 -5 Business Days )
Product Feature :
  • Doctor to check quality of drinking water
  • TDS is directly related to the purity of water
  • Based on the PPM count every body can understand that water is drinkable or not
  • Dual use can check TDS as well as Temp
  • Any time you can check the quality of RO Water before drinking
  • With attractive leather cover
  • Product Information
  • Technical Specification
  • Brand Information

Ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver. Perfect for both consumer or commercial use. Carry one in your pocket or toolbox at all times!


  • Ideal for commercial use. Includes a carrying case with belt clip.
  • Highly efficient and accurate due to its 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 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image.
  • Built-in digital thermometer
  • Display: large and easy-to-read LCD screen.
  • Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.


What is TDS?

Total Dissolved Solids (TDS) are the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water, expressed in units of mg per unit volume of water (mg/L), also referred to as parts per million (ppm).

(TDS is directly related to the purity of water and the quality of water purification systems and affects everything that consumes, lives in, or uses water, whether organic or inorganic, whether for better or for worse.)

This meter is extremely important to check the quality of drinking water.Now these days most of the homes are equiped with RO water purifiers .The quality of drinking water and hardness changes everyday based on the input water i.e.ground water conditions.

This meter helps to monitor the quality of drinking water based on the PPM count every body can understand that water is drinkable or not.

Why Should You Measure the TDS Level in Your Water?

The EPA Secondary Regulations advise a maximum contamination level (MCL) of 500mg/liter (500 parts per million (ppm)) for TDS. Numerous water supplies exceed this level. When TDS levels exceed 1000mg/L it is generally considered unfit for human consumption. A high level of TDS is an indicator of potential concerns, and warrants further investigation. Most often, high levels of TDS are caused by the presence of potassium, chlorides and sodium. These ions have little or no short-term effects, but toxic ions (lead arsenic, cadmium, nitrate and others) may also be dissolved in the water.

Even the best water purification systems on the market require monitoring for TDS to ensure the filters and/or membranes are effectively removing unwanted particles and bacteria from your water.




HM Digital


TDS-3 (Temp & TDS)


TDS Meter

TDS Range

0-9990 ppm(mg/L)

Temp Range

0-80 degree Celsius


1ppm,1degree Celsius



Conversion Factor

NaCl (avg. 0.5)


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


15.5 x 3.1 x2.3 cm

Weight with case


Weight without case



Established in 1987, HM Digital, Inc. (formerly known as Heemang Electronics) is an original equipment manufacturer (OEM) that has been recognized worldwide for providing the best values in water testing instrumentation, especially the increasingly popular TDS meter.

Our products are co-designed between our Los Angeles office and our ISO-9001-certified factory in Seoul, Korea, producing high quality water testing and monitoring equipment for all types of water treatment and purification systems, including reverse osmosis (RO), that are sold in over 50 countries throughout the world. We also offer OEM services for customized products and private labeling.

In 2000, the US office was established in Los Angeles, CA to provide marketing, customer service and distribution for the Americas, Europe, Africa, the Middle East, Australia and South Asia. We strive to always provide the best values as well as the utmost care in promptly serving our distributors and customers.

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HM Digital Hand Held TDS-3 Meter

MRP : 1299 799

Shipping charge:49

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