Best TDS Meter

TDS stands for total dissolved solids. TDS meter is a small digital hand-held device similar to a thermometer. It is also called ppm pen, nutrient tester or TDS stick. It is an inexpensive means of measuring TDS in water. It measures total dissolved solids in parts per million (ppm). The higher the reading the more contaminants and pollutants in the water. These contaminants can be measured in ionized, molecular or micro-granular suspended forms. Raw water contains algae, bacteria, calcium, iron, nitrate, lead arsenic, magnesium, phosphate, silicate, cadmium, copper, cyst, rust, potassium, sodium, viruses, carbonate deposits, de-icing salts, chlorine, fluorine, insecticides, pesticides and phytoplankton. TDS meter determines what methods are needed for the proper treatment of raw water. It is important that the meter is given about ten seconds for the accurate calculation of TDS level.

TDS means anything in water except the molecule of H2O itself. It is safest to have as low reading as possible. If the reading is zero, it means the water is completely pure. Environmental Protection Agency (EPA) has set five hundred ppm as an acceptable TDS level of potable water. TDS levels greater than one thousand ppm are unsafe for human use.

A TDS meter is used in aquariums, drinking water plants, refrigerators, sinks, pools, hydroponic systems and testing the membrane of home Reverse Osmosis system. Some models can also measure the temperature and EC (electrical conductivity) of water. Water is only capable of conducting electricity if it has anions (negatively charged ions) and cations (positively charged ions) in it.

Reviews of the Best TDS Meter

**Below, you’ll find our more detailed reviews, but you can also click the links above to see current prices or read customer reviews on Amazon.

Top 10 Best TDS Meter Reviews

 

1.
Water Quality Tester, Accurate and Reliable, HoneForest TDS Meter, EC Meter & Temperature Meter 3 in 1, 0-9990ppm, Ideal Water Test Meter for Drinking Water, Aquariums, etc.
  • ACCURATE AND RELIABLE: To achieve high accuracy, equipped with premium quality titanium alloy probe, and reliable Automatic Temperature Compensation (ATC) ensures reading always be accurate at various temperatures.
  • MULTIFUNCTIONAL AND UPGRADED: Professional TDS, EC and Temperature Pen 3 in 1. Upgraded with big backlit LCD for easier reading, and auto-lock function for easier use.
  • EASY AND INSTANTLY: Just turn TDS meter on and stir water gently, then stabilized readings will be auto-locked on LCD in seconds, and the tds ppm meter will shut off automatically if without operation over 2 minutes.
  • MULTIPURPOSE TDS TESTER: Test drinking water purity to ensure it's healthy, monitor if Reverse Osmosis (RO)/DI System works properly, whether filter need replaced, maintenance aquarium, hydroponics(test nutrients), pool and spa, etc.
  • 3 YEARS WARRANTY. And we offer 90 days Money Back Guarantee if not totally happy with the digital TDS water tester meter.
2.
TDS Meter Digital Water Tester, DUMSAMKER Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More
  • TEST YOUR WATER: How Pure is Your Water? With the push of a button, the TDS water tester can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million)
  • EASY TO USE AND ACCURATE: Just stick it in about 1 inch of water instantly you get the reading. It's compact and doesn't need any maintenance. The TDS water tester is a rugged model that includes a protective carrying case with belt clip
  • 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
  • AUTO-OFF AND HOLD FUNCTION: The TDS tester shuts off automatically after 2 minutes of non-use to conserve batteries. Features a hold function that saves measurements for convenient reading and recording
  • WHAT YOU GET: Dumsamker water tester, user manual, our fan-favorite 18-month warranty and friendly customer service
3.
HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy
  • Economy model that is ideal for end-users. Highly efficient and accurate due to its advanced microprocessor technology.
  • Hold Function: saves measurements for convenient reading and recording and battery life is approx. 1000 hours of usage and power source is 2 x 1.5V button cell batteries (included) (LR44 or equivalent)
  • Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Display: large and easy-to-read LCD screen.
  • 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. Fun, translucent blue housing that's very strong and durable.
  • TDS-EZ meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. Includes a TDS chart sticker on the back of the meter that explains TDS values.
4.
TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More (LX-TDS1)
  • TEST YOUR WATER: How Pure is Your Water? With the push of a button, the TDS water tester can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million)
  • EASY TO USE AND ACCURATE: Just stick it in about 1 inch of water instantly you get the reading. It's compact and doesn't need any maintenance. The TDS water tester is a rugged model that includes a protective carrying case with belt clip
  • AUTO-OFF AND HOLD FUNCTION: The TDS tester shuts off automatically after 2 minutes of non-use to conserve batteries. Features a hold function that saves measurements for convenient reading and recording
  • 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
  • WHAT YOU GET: Lxuemlu water tester, user manual, our fan-favorite 18-month warranty and friendly customer service
5.
TDS Meter Digital Water Test Meter, TDS Temperature & Conductivity Meter 3 in 1, 0-9999 ppm, Hydroponics EC Meter, Digital Water Quality Testers for Drinking Water, ppm Meter for Hydroponics Aquarium
  • [ BONUS 3 in 1 Digital TDS Temperature & Conductivity Meter] Hofun 3 in 1 TDS, Electric Temperature & Conductivity Meter features the most advanced and updated technology. Three different measurement needs can be fulfilled by one digital water quality tester. Not only been convenient for you, but also saves your time and money, absolutely a helpful kit for your life.
  • [ RELIABLE TDS METER -- ACCURATE & QUICK] Equipped with premium quality titanium alloy probe, Hofun TDS water quality test meter enables quick and convenient test. Put the probe into water and LCD shows accurate results in seconds. In addition, advanced and reliable Automatic Temperature Compensation (ATC) ensures measurement accuracy, 0-9999 ppm, making it fits multiple usages, hydroponics meter,Ideal water testers for drinking water test, swimming pool, laboratory, aquarium, RO/DI Water etc.
  • [ EASY READING BIG BACKLIT LCD DISPLAY & QUALIFIED WATER TESTER ] Hofun water hardness test meter for hydroponics ec meter with Big Backlit LCD is far superior than other ones, which allows wider angles of data reading and night reading. Besides, Red backlight ( ppm figure over 40 ) means high level ppm figure. Green backlight ( ppm figure below 40 ) indicates TDS figure qualified for direct drinking water (Notes: International standard adopted TDS figure 40 as a dividing line).
  • [ EASY OPERATION & ENERGY SAVING ] Hofun ppm meter allows one button operation. Just turn TDS meter on and stir water gently, then stabilized readings will be auto-locked on LCD in seconds, and the tds ppm meter will shut off automatically if without operation over 2 minutes.
  • [ ONE YEAR WARRANTY & LIFETIME TECHNICAL SUPPORT ] Hofun water hardness test meter is manufactured under extra high standards and of excellent quality. Thus we have absolute confidence of our water test meter and offer ONE YEAR warranty and LIFETIME technical support to guarantee your investment. We will always try every effort to provide our customers 100% satisfaction. No more hesitate to "ADD TO CART" and "BUY IT NOW".
6.
TDS Meter, Water Quality Tester Filter Pen, Accuracy Testing Water Quality for Drinking Water Purity Test, Swimming Pools, Aquariums, Etc.
  • Highly efficient and accurate due to its advanced microprocessor technology, one measurement can be completed within 5 seconds.
  • Built-in Digital Thermometer, Display: Large and Easy-to-read LCD Screen.
  • Long battery life cycle: It’s used with 2pcs 1.5V batteries, can use more than 3 years, it will be power-off automatically after stop using in 5 minutes to save the battery.
  • High accuracy: +/- 2% Readout Accuracy Testing, the titanium alloy probe has high test accuracy, which can avoid the interference of magnetic field in water.
  • Imported High-Quality Clip, warranty 3 years.
7.
TDS Water Quality Tester - TDS, EC & Temperature Meter 3 in 1, 0-9999 ppm Meter, LCD Display,Digital TDS Meter for Drinking Water Test,Swimming Pool, Aquarium Test, RO/DI Water, Hydroponics
  • [ RELIABLE TDS METER WITH ACCURATE & QUICK MEASUREMENT ] Equipped with premium quality titanium alloy probe, TDS water quality test meter enables quick and convenient test. Put the probe into water and LCD shows accurate TDS figure in seconds. In addition, advanced and reliable Automatic Temperature Compensation (ATC) ensures measurement accuracy, which reaches 0-9999ppm, making it fits multiple uses, drinking water test, swimming pool, laboratory, Hydroponics, aquarium, well water, etc.
  • [ BONUS 3 in 1 TDS, EC & TEMPERATURE METER ] Hofun 3 in 1 TDS, Electric Conductivity & Temperature Meter features the most updated technology. Three different measurement needs can be fulfilled by one meter. Not only been convenient for you, but also saves your time and money, absolutely a helpful kit for your life.
  • [ EASY READING BIG BACKLIT LCD DISPLAY & QUALIFIED WATER TELLER ] Hofun water hardness test meter with Big Backlit LCD is far superior than most digital water quality tester display, which allows wider angles of data reading and night reading. Besides, Red backlight ( ppm figure over 40 ) means non-drinking water. Green backlight ( ppm figure below 40 ) indicates TDS figure qualified for direct drinking water (Notes: International standard adopted TDS figure 40 as a dividing line.)
  • [ EASY OPERATION & ENERGY SAVING ] Hofun ppm meter allows one button operation, turn it on and put it into water, you can get your desired data in seconds. Besides, there is a chart at the back of this test meter for figure reference.
  • [ ONE YEAR WARRANTY & LIFETIME TECHNICAL SUPPORT ] Hofun water hardness test meter is manufactured under extra high standards and of excellent quality. Thus we have absolute confidence of our water test meter and offer ONE YEAR warranty and LIFETIME technical support to guarantee your investment. We will always try every effort to provide our customers 100% satisfaction. No more hesitate to “ADD TO CART” and “BUY IT NOW”
8.
KETOTEK Water Quality Test Meter, PH Meter TDS Meter 2 in 1 Kit with 0-16.00 ph and 0-9990 ppm Measure Range for Hydroponics, Aquariums, Drinking Water, RO System, Fishpond and Swimming Pool
  • COST-EFFECTIVE PRODUCT PARTNER. It would be more economical and convenient than purchasing it separately. The testing data from PH meter and TDS meter all are practical. The pen meter partner also can be separately used whenever you need.
  • WIDELY USED AND ACCURATE. Digital TDS meter has measurement range 0-9990ppm and ±2% accuracy, PH meter has measurement range 0.00- 14.00PH, 0.01PH accuracy and 0.01PH resolution.
  • AUTO-OFF FUNCTION AND EASY TO USE. Digital TDS meter and PH meter both have the function of Auto-off, it will automatically shut off with inactivity to save the battery’s life. The TDS meter and PH meter both are easy to use, just need to press “ON/OFF” to open and use it, and just need to press “ON/OFF” to close it.
  • AUTOMATIC TEMPERATURE COMPENSATION ( ATC ). Digital ppm tester and ph tester both have the function of ATC, the measuring data won’t be influenced by the water temperature, no matter testing the ppm or ph of the water.
  • SMALL SIZE AND POCKET PORTABLE. TDS tester and PH tester have small size and low weight as a pen, they are easy to be carried, and convenient for you to take it in your pocket when you go out.
9.
PH Meter, Digital Water Quality Test TDS PH EC Temperature 4 in 1 Set for Water, Indoor, Pool and Aquarium
  • 【Multifunction PH Meters Suit】 with TDS PH EC temperature accuracy, faster for drinking water, aquariums, pools, spas, well water, etc. indoors or on vacation to test what the water safety can ensure the daily life.
  • 【To calibrate the pH Tester】 Calibration does not require a screwdriver. The pH meter with ATC can automatically calibrate. To maximize convenience, simply press the Calibration key
  • 【High accuracy】: The numbers of the pH meter range from 0.00-14.00 (PH), while the numbers of the digital EC and TDS meters range from 0 to 19990 ppm. PH Resolution is 0.01pH, Accuracy ± 0.05pH.TDS: 0 ~ 9990ppm, Conductivity: 0 ~ 9990us / cm, Accuracy: ± 2%
  • 【TDS have lock & auto-shut off function】 Conductivity meter has the accuracy of 0.1 ℃. Dump the item about 4 seconds in the liquid to get accurate values. In order to record the number, you can also Press the HOLD keyboard.
  • 【LCD Display】: The LCD clearly displays the data and the LCD backlight turns off automatically. Small and easy to carry. 365 days for a worry-free return service.
10.
【2019 Upgraded】TDS Meter Digital Water Tester,NinHappy Professional 3 in 1 TDS/EC/Temperature Meter,0-9999ppm Meter,LCD Display,Ideal ppm Meter for Drinking Water, Aquariums,RO System and More
  • 【 Upgrade LCD BACKLIGHT】Our water meter equipped with low-power backlight technology to test water at night or in dark places easily. It can also be used to distinguish between drinking water and non-drinking water. Red backlight(ppm>40) means this is non-drinking water.
  • 【 ACCURATE AND WIDE MEASUREMENT RANGE】: The advanced 3 in1 (TDS, EC, Temperature) conductivity pen equipped with premium quality titanium alloy probe to achieve high accuracy, and reliable Automatic Temperature Compensation (ATC) ensures reading always be accurate at various temperatures. Testing range from 0-9990 ppm, the resolution is in increments of 1ppm,indicated by a blinking 'x10' image.
  • 【TEST YOUR WATER PURITY】: With our slim and lightweight conductivity meters pen can test how pure is your water? Just stick it in about 1 inch deep of water, then TDS water tester can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million).
  • 【 EASY TO USE AND HANDY】: Just stick the TDS meter tester into the water of 1 inch deep, then stabilized readings will be auto-locked on LCD backlight screen in seconds, TDS tester shuts off automatically after 2 minutes of non-use to conserve batteries. Features a hold function that saves measurements for convenient reading and recording.
  • 【WHAT YOU GET】: 1 TDS water tester, 1 user manual, 1 preinstalled battery, 2 extra battery, 1 leather case, our fan-favorite 3 year warranty and 90 days money back guarantee if there is any problem with the digital TDS water tester meter.

Ultimate Buying Guide – TDS Meter

 

Things To Consider When Buying A TDS Meter

  • Automatic temperature control (ATC):

An automatic temperature compensation capability ensures consistent readings regardless of chilling water or boiling one. If you ignore this feature you will get different TDS level for the same water at different temperatures.

  • Auto-off function:

Automatic shut off function ensures the longevity of the battery life and prevents early battery run down. Different models feature an auto-off after different intervals of inactivity like two minutes, five minutes or ten minutes.

  • Accuracy:

Pick the TDS meter that uses advanced microprocessor technology which gives a readout accuracy.

  • Battery life:

A small drop in the battery voltage can cause a significant error. Pick the TDS meter with a long battery life of one thousand hours of usage.

  • Bright clear display:

Look for the LCD screen with large clear easy to read digits and a backlight to make it useful at nighttime. Make sure the LCD display and its sensitive parts are protected by a strong translucent housing. Some models that can measure the temperature, TDS level and EC (electrical conductivity) of your water have four different display modes, which are switched or turned on/off using the SHIFT button: i) ppm and degree Celsius mode, ii) EC and degree Celsius mode, iii) ppm and degree Fahrenheit mode, iv) EC and degree Fahrenheit mode.

  • Calibration:

Most models are factory calibrated with three hundred and forty two ppm sodium chloride (NaCl) solution, while others can be recalibrated using a mini screwdriver to fit measurements levels of your needs.

  • Cap and case:

Pick the TDS meter that has a removable cap that covers the part of the meter that you can submerge in the water. Make sure a nifty leather storage case is included to protect the meter after use.

  • Dual TDS monitor:

Dual TDS monitor measures TDS level in water getting in and out of a water system. It is the best way of determining water quality levels of water purification systems like deionization and reverse osmosis. You will have to appropriately attach the “IN” sensor to the tap water and the “OUT” sensor to your product water. You will be able to determine the operation or rejection rate of your filter or osmosis membrane by comparing the two TDS concentrations. The TDS level after reverse osmosis should be at least ten times lower than that of the tap water. For example, your tap water has five hundred ppm TDS level, your reverse osmosis is functioning properly only if the water has TDS level of twenty five ppm.

  • Easy to clean:

Make sure the electrodes of your TDS meter are easy to clean simply br rinsing in RO water. If scale builds up on the electrodes you may be able to clean them using vinegar. But you must never use detergents to clean it or it will give you false TDS readings.

  • Immersion line:

It is really important to submerge the meter only up to the specified distance. Submerging it deeper than the immersion line can damage its electrical components. This is why, make sure your meter has a clearly marked and visible immersion line to tell you exactly how deep to submerge the meter.

  • Recording:

Make sure your TDS meter is capable of saving the readings to keep the records. This feature is really helpful if you are willing to track the purity of water over time. You can save the measurements by holding the function button.

  • Measurement range:

Most TDS meters have a measurement range between zero and nine thousand nine hundred and ninety nine ppm. It means that for TDS levels higher than this range you will have to multiply the reading on the screen with ten. Make sure the x10 indicator flashes clearly on the screen when this multiplication is required.

 

0 replies

Leave a Reply

Want to join the discussion?
Feel free to contribute!

Leave a Reply

Your email address will not be published. Required fields are marked *