If you want to test water purity, here’s our list of the best TDS meters to help you choose the right one. TDS meters determine the presence of dissolved solids in the liquid. And, while this doesn’t give you an accurate reading of the number of dissolved solids, it measures the electrical conductivity, which is a clear indication of the particles present in the liquid. TDS meters can be useful since we have a diverse source of water supply. They are suitable for commercial filtration systems, checking contamination of home water purifier systems, and hydroponic systems to check salt content. With various options available, choosing the right one can be challenging. So, explore our list of products and features to make an informed decision.
11 Best TDS Meters For Drinking Water
1. Best Digital TDS Meter:Test Assured Complete Water Analysis Test Kit
This comprehensive home water testing kit contains 10-in-1 tests and checks for iron, lead, nitrates, nitrites, copper, chlorine, alkalinity, pH, hardness, and total dissolved solids. One of the best TDS meters for drinking water, it’s easy to use and enables you to take your own samples and receive quick, accurate results without any requirement for lab testing. The combination of the water testing kit and TDS meter enables you to thoroughly test your water for multiple water contaminants and water hardness. This video will give you more insights into the product. Pros
EPA quality standard Digital TDS meter Results within minutes Comes with color charts and manual
Cons
May take some time to understand the instructions
2. Best With Backlit LCD:Wiztech pH Meter
Wiztech pH meter performs 3 functions— it measures pH, TDS, and temperature very accurately at the same time. With a high sensitivity glass probe, its pH meter has a full measurement range of 0-14 pH and gives an accuracy ±0.1. It also uses an efficient 3-point calibration method, calibrating the electrode to solutions of pH 4.00, 6.86, and 9.18 to ensure accuracy. It features a gentle green backlight that protects the eyes from glare. The backlight switches off automatically, saving power and ensuring battery life. It comes with automatic temperature compensation or ATC so you no longer need to pay attention to the temperature of the liquid being tested. The ATC can accurately determine the pH value of the sample in the temperature range of 0°C-60°C /32°F-140°F. It’s ideal for use in both households and laboratories for pH testing. Pros
Durable electrodes 2 display temperatures Backlit LCD Suitable for testing swimming pool water
Cons
Some may not be satisfied with its calibration
3. Best Convenient To Carry:Cherioll Water Tester
This multifunction TDS meter performs 4 functions— it tests the pH, TDS, EC, and temperature accuracy of water in no time at all. It can test the quality of drinking water, aquariums, pools, spas etc. and can make your day-to-day life healthier. The pH meter comes with an automatic temperature compensation or ATC and can calibrate itself automatically. All you need to do is press the calibration button. The LCD display screen shows the data clearly and automatically. In this TDS meter, the numbers on the pH meter range from 1.00 to 14.00 while the numbers on the digital EC and TDS meter range from 0 to 9990 ppm. Pros
Convenient to carry High accuracy Has induction electrode Can detect 3 kinds of impurities
Cons
The battery may not be long lasting.
4. Best LCD Display:Ketotek Water Quality Test Meter
This product comes with 1 TDS meter, 1 pH meter, 2 packets of pH buffer powder, and a user’s manual. This works out more economical than buying the 2 meters separately and can also be used independently as needed. The pH meter has an agile glass probe while the TDS meter has a titanium alloy probe. The digital TDS meter has a measurement range of 0-9990 ppm with ±2% accuracy while the pH meter has a measurement range of 0.00-14.00 pH, with 0.01 pH accuracy and 0.01 pH resolution. Both the meters have an auto-off function, which means it shuts down automatically when not in use and saves battery life. It also comes with automatic temperature compensation or ATC and so the temperature of the water does not affect the reading. Lightweight and small in size, they are easy to carry and use. Pros
LCD display Accurate readings Comes with protective cover Comes with pH buffer powder
Cons
Some may find calibrating difficult
5. Best With Adjustable Temperature:Myron 6PIIFCE Multi-Test Water Meter
Read the TDS value of your water with the Mryon water meter. This water meter does the job of five to six water testers in just a single unit. This unit is waterproof, and you can fully immerse it up to a one-meter water level. It is equipped with an advanced four-electrodes cell for resistivity, conductivity, pH, and TDS. It can store multiple readings which you can access using the control buttons. In addition, you can also connect the meter to your laptop via Bluetooth and store all saved data. The four-digit display can show the readings upto 9999. To make an informed decision before buying, you can check out this video. Pros
Easy to use LCD screen Adjustable temperature
Cons
The pH testing cell needs a solution to maintain it
6. Best Pocket Portable:Pancellent Water Quality Test Meter
Know your water quality within 5 seconds with the Pancellent Water Quality Test Meter. This kit includes a TDS meter and pH reading meter. The pH meter reads the value with an accuracy of ±1% and the TDS meter with ±2%. The pH meter has a calibration button, and the TDS meter has a lock function. This water testing meter is ideal for home and laboratory testing. Pros
Immersing level indicator Digital meter Pocket portable Auto shut off
Cons
May take a long time to read pH
7. Best Factory-Calibrated:HoneForest TDS Meter
This digital PPM meter is designed with advanced microprocessor technology and combines a TDS meter, EC meter, and temperature meter in one ergonomically designed pen. For higher accuracy, it comes equipped with a premium quality titanium alloy probe. It also has the feature of automatic temperature compensation, which means the temperature of the water will not affect the meter reading. The backlit LCD screen turns green if the TDS is less than 40 and red if it’s more than 40. It has the added feature of auto-lock, so the reading can be stabilized in seconds and locked automatically for the convenience of reading and recording. It can also be locked manually by pressing the ‘HOLD’ button. HoneForest water quality tester automatically switches off after 2 minutes of not being in use to conserve the battery, and as a plus, it comes with a 3-year warranty. Pros
Backlit LCD Factory-calibrated Includes a protective case with belt clip Colored TDS chart to explain ppm readings
Cons
Does not test pH
8. Best Easy To Read:Health Metric TDS Meter
This meter measures the TDS, electrical conductivity or EC, and temperature in both °F and °C of any liquid in a matter of seconds. It has a range of 0-9999 ppm for TDS, 0-9990 μs/cm for EC, and 32-176°F and 1-80°C for temperature. Fitted with the latest sensors and titanium alloy electrodes, this meter comes calibrated from the factory and gives you instant TDS or EC readings without requiring manual calibration. This TDS meter has a backlit LCD screen that’s easy and convenient to read. It has the feature of auto-lock and manual-lock so that the reading can be locked automatically for convenience of reading and recording. It automatically switches off if not being used to extend battery life. Pros
Easy to carry anywhere 4 display modes Easy to recalibrate Comes with a free user guide to explain meter readings
Cons
Does not test water hardness
9. Best Auto Calibration:Hofun 3-In-1 High Accuracy Water Quality Tester
With the push of a button, this digital TDS meter can read the overall purity of your drinking water which will then be displayed on the LCD screen in ppm. This helps you to know whether your water purifiers are doing their job properly and when to change the filter. This water testing meter checks the TDS, EC, and temperature of your drinking water with the most updated and advanced technology. Fitted with a high quality titanium alloy probe, this TDS meter enables quick and convenient testing. It comes with a superior, convenient, easy-to-read backlit LCD screen and allows wider angles of data reading. The backlight turns red if the ppm is above 40 and green when it’s below 40. It shuts off automatically when not in use for more than 2 minutes, thus conserving battery life. Pros
Auto calibration Accurate reading Automatic temperature compensation Allows night reading
Cons
Doesn’t measure pH of the water
10. Best Color-Coded Display:Luoleina Digital TDS Meter
This 3-in-1 TDS meter combines TDS, EC, and a temperature meter with improved accuracy. It also comes with automatic temperature compensation and a measuring range of 0-9999 ppm and accuracy of ±2% for TDS, 0-9990 μs/cm for EC, and a temperature range of 32-176°F and 1-80°C. The backlight turns red if the ppm is above 40 and green when it’s below 40. It also has a feature of auto data-hold to lock and record readings and an auto-off function for extended battery life within 9 minutes of its last use. After locking, you can press the “SHIFT” button and the instrument automatically shifts between the 4 display modes. This TDS meter for water testing is highly accurate due to its advanced microprocessor technology. Pros
Color-coded display Comes with battery Easy to use Backlit LCD screen
Cons
The meter might display misspelt words.
11. Best For Water Testing:Ammzo TDS Meter
This 4-in-1 TDS meter for water testing can accurately and quickly check the soluble salt content, heavy metal content, and ionic organic matter in water. It tests the TDS, EC, and displays the temperature in both °C and °F. It now comes in a new upgraded version of 2022, which makes it all the more efficient. It is fitted with a high-quality titanium alloy probe that measures TDS in a range of 0-9999 ppm. This TDS meter gives better results in normal temperature and non-flowing water. Pros
Color coded scale Accuracy is ± 2% 1 year replacement warranty Does not need calibration
Cons
Some may not be satisfied with the temperature meter
Now that you have been through our review of the 11 best TDS meters for drinking water, we will share a few tips on what to keep in mind while choosing a TDS meter for your use.
How To Choose The Right TDS Meter For Drinking Water
Ratings or readings
It is another vital point that you need to check in every TDS meter as it relates to the checking process of the water. The company must mention the micron ratings or PPM ratings in the product description. If not, there is no way of knowing the actual micron or PPM rating of the meter. A good quality TDS meter should have a micron rating of 0.3 micron, and for PPM readings, you should buy a meter that has 0 to at least 990 ppm.
Purpose
While buying a TDS meter, you need to keep in mind whether you need it for single-purpose or multi-purpose use. A single-purpose meter can be used for a particular sample of water only, that is, you can use it for only filtered water. But if you buy a multi-purpose meter, you can check any type of water with it.
Battery saving feature
Battery life of a TDS meter is generally limited. The more you use the product the faster the battery gets exhausted, and you may have to invest in a new TDS meter. To increase the longevity of the product, it’s wise to buy a product with battery saving features which shut off automatically and preserve battery life.
Technology
The microprocessor TDS meter uses the latest technology and gives accurate and reliable results. Most meters use electrical conductivity for measurements which is used to assess the presence of electrolytes. Advanced technologies employ several principles and conversions to ensure accurate readings. It is also of vital importance that the meter gives a reading of chemicals and toxic metals present in the water.
Added features
Many TDS meter brands offer a range of additional features, like you can choose one offering you a leather cover for the meter to protect it. Also, some meters have the feature of taking the temperature of the water as well. But do keep in mind whether these additional features of the TDS meter are worthwhile for you as they would come at an extra cost.
Why Trust MomJunction?
Our writer Sakshi John is experienced in household products. She has reviewed the best TDS meters for drinking water to help you purchase the right one. Sakshi has studied the products and customer reviews thoroughly to find the best products. Instant results, compliance with EPA quality standards, durability, the total number of impurity detections, etc., were a few other features she considered while preparing this list. She has also included a buying guide to help you find the right TDS meter.
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