Top 10 Selling TDS Meters in The World in 2024

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Top 10 Selling TDS Meters on The Market in 2024

10. Hofun Digital TDS Meter (3-in-1)

Amazon

Hofun Water Quality Tester can be easily used to test the purity of drinking water. This reliable and accurate product is equipped with a premium quality titanium alloy probe, which enables quick and convenient testing. Just put the probe into water and LCD shows accurate results in seconds. This water tester is ideal for testing drinking water, swimming pools, laboratories, aquariums, RO/DI systems, hydroponics, etc. The TDS meter shuts off automatically after 2 minutes of non-use to protect the batteries. The large backlit LCD is far superior to other ones; the red backlight ( ppm figure over 40 ) means a high-level ppm figure and the green backlight ( ppm figure below 40 ) indicates TDS qualified for direct drinking water. The stabilized readings will be auto-locked on the LCD in seconds and you can read the results carefully. Hofun Water Quality Tester is a reliable and accurate product to determine the TDS, EC, and temperature of the water.

Table. Hofun 3-in-1 Digital TDS Water Meter, TDS, Temperature & Conductivity.

Favorable Customer Reviews

1. It works reliably and fast after 1 year and is also easy to use. The user expressed satisfaction with its overall performance.

2. The user described the product as a great meter, mentioning it is easy to use and read.

3. The Hofun 3-in-1 Water Quality Tester was tested by the user and it was approved to be accurate.

4. The product brings peace of mind to know the quality of the water you are drinking since it measures conductivity and temperature along with TDS.

5. The user expressed satisfaction since the product came with complete instructions and two replacement batteries.

6. This TDS water meter was very affordable and did exactly what it was supposed to do without any issues.

7. The product provides the same reading across multiple tests, ensuring reliability and accuracy.

Critical Customer Reviews

1. The user got two different readings from the same glass of water, which led to concerns about the product’s reliability and accuracy.

2. Despite being accurate, it does not measure the hardness of pool water as claimed, making the user disappointed. 

3. Several users reported that the top of the product comes apart and the battery falls out when taken out of the leather case or while using the meter.

4. This item did not last long, and in some cases only lasted 3 months. The user reported that after it showed 0, it could not be calibrated.

5. The Hofun TDS water Tester took too long to measure the temperature in aquariums.

6. Some users criticized the product for having poor quality, which made the product not durable.

9. WoEluone Water TDS Meter

Amazon 

This lightweight conductivity meter pen allows you to test the water's purity. You just need to stick it in about 1 inch of water, and then the TDS water tester can tell your overall water purity level, which will be displayed on the LCD in ppm. The WoEluone TDS water meter turns off automatically after 5 minutes of non-use to protect the battery life. The Testing range is from 0-9990 ppm, and the resolution is in increments of 1ppm. This tool features a hold function that saves measurements for convenient reading and recording. This TDS Meter has high test accuracy and can be used in aquariums, outdoor activities, RO/DI systems, hydroponics, swimming pools, and for tap water quality measurement.

Table. Features of WoEluone TDS Water Meter.

Favorable Customer Reviews

1. This product worked well and was considered a good purchase.

2. It is very easy to use. You just need to put in water, wait, and then read the results. The user appreciated this feature.

3. After a month of using this TDS meter, it is still accurate and helpful to see if the water is drinkable or not. 

4. The WoEluone TDS water tester is affordable and available at a reasonable price. The user tested this meter on filtered and tap water and received the correct results.

5. This TDS water tester can be easily used. The user is happy with this purchase and recommends it to others who have a saltwater pool.

6. One user reported that this tool is useful for testing the water quality of a new home.

7. The user finds this product very easy to use and understandable. It can be used to see if the water is healthy and good to drink. The buyer recommended this product.
   

Critical Customer Reviews

1. The product failed to give accurate results, leading to the user’s disappointment with their purchase.

2. The user does not recommend this product to others because the numbers that it shows are random and not accurate.

3. This TDS meter only shows some numbers but there are no instructions to help you understand the level of TDS in the water.

4. The user expressed disappointment with this purchase because it showed different numbers each time.

5. The user could only use this product once. It is not expensive but is a defective product. The user is not satisfied with this product and shows concerns about its durability.

6. According to one of the comments, the product has poor customer service. The user criticized the company's lack of support.

7. This TDS water meter only worked once and stopped working after that. The user tried to change the battery but it didn't turn on.

8. APERA INSTRUMENTS PC60 Multi-Parameter Water Tester Kit

eBay

Amazon

APERA INSTRUMENTS

APERA INSTRUMENTS 5-in-1 guarantees dependable and accurate results every time you use it to assess water quality. This product includes a replaceable multi-parameter probe with easy installation. The large Clear LCD screen with 3 backlit colors (indicating 3 different modes) provides easy reading for TDS level in the water, as well as the other 4 parameters. This waterproof and dustproof water meter floats on water so you don’t have to worry if it falls into the water by accident. Complete instructions are included with the product, so you can easily use the meter and understand the values. It can be used in a wide range of applications, including hydroponics, horticulture, aquaculture, pools and spas, drinking water, water treatment, cooling towers, environmental monitoring, and more. It can be fully customizable due to the user’s needs.

Table. Features of TDS APERA INSTRUMENTS MeterMulti-Parameter Pocket Tester Kit.

Favorable Customer Reviews

1. The user was very impressed by this product. It is easy to work with this TDS meter.

2. This tool gave accurate results when testing tap water. The user expressed satisfaction with this good purchase.

3. The product is waterproof as claimed, and is praised for having a replaceable sensor. 

4. The APERA INSTRUMENTS water tester has high quality and can be easily calibrated, resulting in the user’s overall satisfaction. 

5. It is a durable and well-made product that gives you accurate results. The buyer is satisfied with the purchase.

6. The user had issues with the product, but the customer service helped the user fix their issues. The seller’s customer support was highly appreciated. 

7. The product came with a hard plastic case to keep everything organized and protected.

Critical Customer Reviews

1. The user received a used, cracked, and moldy product, which was very frustrating. 

2. After a week of use the TDS, EC, and Salinity stopped working and showed 0 in different testing conditions. The Total Dissolved Solids Meter did not last long.

3. The poor quality of the product was criticized, and users mentioned that it was not worth the price.

4. The water quality tester arrived damaged and seemed used before, leading to the user’s disappointment with the company’s poor quality control.

5. Despite the great performance, the glass bulb broke after a month for no reason, mentioning its fragile construction. 

6. The user reported that the LED displayed on half of the screen made it difficult to understand the values.

7.  Hiteenyian 5-in-1 Water Quality Tester

Walmart

Hiteenyian water quality tester is a multifunctional tool that can measure pH, TDS, EC, salinity, and temperature. This product ensures high accuracy with a quick response. When the measured value is stable, you just need to press the HOLD/TEMP key to lock the measured value and view the results. The TDS measurement range is 0-200000 ppm. The product is made of high-sensitivity probes, and anti-rust material, ensuring durability. This TDS water meter measures values quickly and accurately using a sensitive waterproof probe. This water tester features a large backlit LCD to help you see the measurement results. It also has an auto shut-off function that can turn off the meter after 5 minutes to protect the battery life. This water quality tester can test drinking water, swimming pools, aquariums, spas, aquaculture, ponds, and hydroponics, and can be used in other indoor and outdoor applications.

Table. Features of Hiteenyian 5-in-1 water quality tester

Favorable Customer Reviews

1. This is a great pen-type water tester that can be used to test the quality of water for aquarium, drinking water, etc. applications.

2. It can be easily used. The results come out quickly after the test. The price is very affordable. You can use it to test the drinking water or swimming pool water quality. The user is impressed with the product.

3. The water tester works perfectly and the results are very accurate, offering reliability.

4. The user appreciated the backlit screen that helps to read the values.

5. The user praised the product’s affordable price and quick response, making it a better option than other brands.

6. This water quality tester is easier to use than others, and the manual is also Very clear.

Critical Customer Reviews

1. The water tester worked great at first, but then it got wet and the LCD stopped working.

2. There were no instructions included in the package about how it should be calibrated and the user was very disappointed. 

3. The product did not turn on after the user changed the battery, leading to dissatisfaction with the product’s durability.

6. ZeroWater TDS Meter-20

Amazon

ZeroWater 

The ZeroWater TDS water meter measures the total dissolved solids in water that can give the water a bad taste. The higher the number displayed on the screen, the more dissolved substances are present in the water. This Total Dissolved Solids Meter does not assess the safety or purity of water, which should only be undertaken by a qualified laboratory. This product can be easily used. You can use the ZeroWater TDS meter to compare different water samples. Batteries are readily available and can be easily changed when needed. This product is a simple method to measure the overall water quality level.

Table. Features of ZeroWater ZT-2 TDS water meter.

Favorable Customer Reviews

1. This tool works perfectly for testing distilled water.

2. The ZeroWater TDS meter is easy to use and gives clear results, making most users satisfied.

3. This product can test the water quality and give accurate results, making the product reliable.

4. This TDS water tester provides great performance. The results are also understandable. 

5. It is an ideal tool to measure the exact value of contaminants and TDS in the water.

6. The product was praised by some users for having an auto shut-off feature and for being easy to use.

7. This product measures the TDS in the water, so you will know when to change the filters of a RO system. It works very well and the user is happy with this purchase.

Critical Customer Reviews

1. The product was received with dead batteries and the user returned the product, leading to disappointment with this purchase.

2. The TDS water tester stopped working after 4 months and became completely useless. It is not suitable for long-term use.

3. This Total Dissolved Solids Meter seemed used before as the screen was scratched all over. The user criticized the seller’s quality control.

4. The batteries are not included as advertised and the user couldn't find the batteries in stores.

5. This TDS meter shows different results every time and is not accurate. This led to concerts about the reliability of the product.

6. It is hard to read the numbers and it is challenging for the user to reach the on/off button.

7. The information provided by the seller is not complete, and there are also no instructions in the package.

5. DUMSAMKER 3-in-1 2024 Upgraded Digital Water Tester

Amazon 

DUMSAMKER 3-in-1 Digital Water Tester can tell you your overall water quality level, which will be displayed on the screen in ppm. This easy-to-use and accurate product instantly gets the reading after you put it in the water. The product does not need any maintenance due to its compact design. The DU-TDSW water quality tester measures TDS from 0 to 9990 ppm and the resolution is in increments of 1ppm. This water meter includes a protective carrying case with a belt clip. This tool is ideal for all water purification applications and can be used in swimming pools, drinking water, aquariums, hydroponics, RO/DI systems, and other indoor and outdoor activities. It shuts off automatically after 2 minutes of non-use to protect the battery life. The  DUMSAMKER temperature, EC, and TDS meter features a hold function to save measurements for easy reading and recording.

Table. Features of DUMSAMKER 2024 Upgraded 3-in-1 Temperature, EC, and TDS Meter Digital Water Tester.

Favorable Customer Reviews

1. The product’s quick delivery and high quality were praised by some users, mentioning it was worth the price.

2. One of the users tested the product with different waters and described the product as accurate and reliable. 

3. The user expressed satisfaction with the product’s different screen colors (Red = bad TDS and green = good TDS).

4. The DUMSAMKER TDS meter is very easy to use and readings are understandable.

5. This product worked as advertised and had a solid construction.

6. This Digital Water Tester came quickly, was well-packaged, and worked well.

7. It could detect the difference between filtered and unfiltered water, making the user satisfied.

Critical Customer Reviews

1. The instructions are not included in the package, so it is difficult to understand the values.

2. The user expressed dissatisfaction with the product’s poor quality and reported that it is made from cheap plastic.

3. The product stopped working after a while. The user described the product as unreliable and not long-lasting. The other user mentioned that it needs to be recalibrated before use.

4. Despite the fast TDS reading, it takes too long to read the temperature of the water.

5. Although there are some guidelines about how to use the product, there are not enough details about the meaning of different modes.

6.  After a few months, the readings became inconsistent and inaccurate, and the product became useless. For this reason, the user does not recommend this product to others.

7. The battery is not replaceable and the display is not very bright, so it is hard to read the values.

4. Bluelab PENCON Conductivity Pen and TDS Meter

Amazon

Bluelab

The Bluelab TDS meter pen helps you see if your plants have the right amount of nutrients and ensures plants get the balanced feed they need. This product also measures the temperature and has ATC (Automatic temperature compensation) that provides consistent readings regardless of any fluctuations in temperature. These durable pens can test and monitor your TDS level to maximize plant growth. The Bluelab meter comes factory-calibrated so it can be used right out of the box. This water tester has a flat electrode for easier cleaning and maintenance. This tool can be used in various applications, including growing tents, swimming pools, drinking water, aquariums, fish tanks, and brewing. It has a fully waterproof design for repeated uses and can be floated in any solution, ensuring reliability and long-term use.

Table. Features of Bluelab PENCON TDS Water Tester for Temperature and Nutrient, TDS Testing Kit.

Favorable Customer Reviews

1. It is a perfect tool and provides accurate reading which makes users satisfied.

2. This TDS meter is the best tool available on the market. It is easy to use and read. The buyer is happy with this purchase.

3. Despite being expensive, the user expressed that it is worth buying. The user tested four different products before this one and reported that the Bluelab  PENCON TDS Testing Kit was the best among them.

4. It is very dependable and works perfectly. It gives the results very quickly.

5. The user highly recommends this TDS water meter due to its build-to-last structure. It is a solid unit and works properly, offering durability and reliability.

6. The user has used it for 3 months and everything is fine with this tool. It is a necessary tool for beginners in hydroponics.

7. This product contains instructions that help you use this tool. It also has a reasonable price due to its features, making the user satisfied and deciding to order this tool in the future.

Critical Customer Reviews

1. The Water Quality Tester was not waterproof as advertised and stopped working after a few months since the water got in the kit.

2. It broke after a week. Users reported that It was poorly made and wasn't worth buying.

3. The user expressed that the water got inside and ruined the LCD screen, although he was very careful and never dropped this tool.

4. The screen and data are hard to read and not as advertised. The numbers are blurry and impossible to read, making users have difficulty using the Bluelab TDS meter.

5. The box was already open when the buyer received their TDS water tester. The other user noticed there was residue under the probe when they received the product.

6. The buyer expressed disappointment with this purchase because it stopped working after 4 months, making the product not durable and long-lasting.

7. The Pen display stopped working after a few days, making the product completely useless, which led to the user’s dissatisfaction with the quality.

3. HM Digital TDS-EZ Water Quality TDS Tester

Amazon

HM Digital 

HM Digital's TDS-EZ is highly efficient and accurate due to its advanced microprocessor technology. The product saves measurements for the user’s convenient reading and the battery has a long life span. The meter automatically shuts off after 10 minutes of non-use to protect the battery power. The LCD screen is large enough so it is easy to read values. The HM Digital's TDS-EZ measures TDS from 0 to 9990 ppm and the resolution is in increments of 1ppm. The product is 100% plastic, ensuring durability and reliability. This TDS water meter is calibrated with a 342 ppm NaCl solution and can be recalibrated with a mini-screwdriver. The product includes a TDS chart sticker on the back of the meter that clarifies TDS values. The TDS-EZ is great for checking tap water quality, or knowing when to change a filter. This TDS meter is a great tool for checking your overall water quality and can be used for drinking water, water filtration and purification, hydroponics (test your nutrients), aquariums, RO/DI systems, pools and spas, and more.

Table. Features of HM Digital Water Quality TDS Meter.

Favorable Customer Reviews

1. This TDS meter can be easily installed and used, giving peace of mind about the water you drink.

2. It is a perfect tool for monitoring the efficiency of RO systems and comparing the TDS in the tap and filtered water.

3. This product is perfect. It is super quick and gives accurate results. The user highly recommends this tool to others.

4. The instructions are understandable and it has a high quality that makes the product long-lasting.

5. According to one of the comments, this TDS meter is a long-lasting product, and the customer has used the product for 10 years without breaking.

6. The user praised the product for being affordable, accurate, and easy to read.

7. The HM Digital’s quick delivery and well-packaging were appreciated by some users. They received their order in good condition.

Critical Customer Reviews

1. One user bought two TDS-EZ Water Quality Testers and placed both in the same glass of water, one read 752 ppm and the other read 371 ppm. They were not calibrated in the factory, as claimed on the packaging.

2. Despite being easy to use, the product is not waterproof, the user dipped it too deep, so the water got into it, and it became useless.

3. The hold button did not hold on to the reading when the user took the meter out of the water, so it was difficult for the user to work with this meter.

4. The product does not measure salt content, as the description indicated, making the user dissatisfied.

5. It stopped working after 3 weeks, leading to concerns about reliability. 

6. The HM Digital TDS meter is described as poorly made and inaccurate.

7. The user received the meter with no instructions included, making the product hard to work with.

2. VIVOSUN pH and TDS Meter (3-in-1) Kits 

Amazon

VIVOSUN 

The VIVOSUN Digital Water Meter is a high-accuracy pen-type meter that includes a pH and TDS meter. It can be used in all home and laboratory TDS & pH testing applications, including aquariums, swimming pools, hydroponics, household drinking, etc. This water quality tester cannot be used to test seawater quality. This lightweight tool comes with a protective case and has a handheld design for portability and convenience.

3-in-1 TDS Water Tester:

• Measurement range conductivity: 0-9990 ppm, 0-9990 µs/cm

• Accuracy: ± 2%

• Degrees Celsius: 0.1- 80.0°C, Fahrenheit: 32.0-176.0°F

Table. Features of VIVOSUN pH and TDS Water Meter.

Favorable Customer Reviews

1. One user expressed satisfaction as It worked perfectly. Both pH and TDS meters are great.

2. This tool is very easy to use and the values are understandable. The user recommends this product to others.

3. It is a very accurate TDS meter, resulting in users' confidence in their purchase.

4. This product is super quick to give the results. The user is happy with this purchase and highly recommends it.

5. It is a great tool at a reasonable price. Users appreciated the product’s affordability.

6. The product was well packaged. The batteries were included and the results were clear. These factors resulted in overall satisfaction.

7. The buyer would recommend this product to others as it works just as expected and with high accuracy.

Critical Customer Reviews

1. The tool stopped working after a few days and the buyer returned the product.

2. The instructions are not very clear. It is not easy to use or read the results. The user would not recommend it.

3. The TDS water meter is good but the pH meter is not accurate, leading to concerns about reliability.

4. One user stated that the directions are not helpful and it started glitching for no reason. 

5. Although the user was following the instructions, after putting the TDS meter in water, the screen died.

6. There was no manual or guide in the package and the user was unable to read the results or use this tool.

7. The VIVOSUN TDS meter could not be calibrated and the results were not accurate.

1. HoneForest TDS Meter (3-in-1) - HFTDS-M7

Amazon

HoneForest

This advanced digital ppm meter pen can measure TDS, EC (Electrical Conductivity), and temperature. It is widely used for water quality testing, water purification applications, aquaculture, hydroponics, pool and colloidal silver, and water treatment. In addition, every household can easily use this tool for testing water, filtered water, distilled water, bottled water, well water, refrigerated water, etc. It is multifunctional, accurate, and reliable.

The HoneForest TDS water tester is equipped with a premium quality titanium alloy probe and an efficient intelligent chip, which ensures its stable performance and makes it a trustworthy water quality tester. It is a user-friendly and upgraded product, which makes it popular among a variety of applications. All you have to do is turn the TDS water meter on and wait, then stabilized readings will be auto-locked on the LCD in seconds, and the TDS meter will shut off automatically after 2 minutes. By using this product, you can test the purity of drinking water to ensure its health, monitor if the Reverse Osmosis (RO) system works properly, determine whether filters need to be replaced, maintain an aquarium, hydroponics (test nutrients), pool and spa, etc.

Table. Features of HoneForest TDS Meter, Water Quality Tester

Favorable Customer Reviews

1. It is very accurate to test the water quality and the user could test the water quality after installing a water filter.

2. This TDS meter was a very great tool to test the water coming out of an RO system and made one user satisfied.

3. The directions are very straightforward and understandable. The user is very happy with this purchase.

4. This product can be easily used. It can be properly used for measuring the quality of pools or drinking water.

5. It has a good price and a good feature, which is a backlight. It works perfectly and the user is very satisfied.

6. It is a portable and small product. The user purchased this product to test the RO water system under the sink and was impressed by the results.

7. The product’s fast delivery and perfect performance contributed to the user’s satisfaction.

Critical Customer Reviews

1. This product is disposable, the battery is soldered in and the battery can not be changed, because the battery is connected to the board. Most comments are focusing on this issue.

2. This product is not working properly because it gives you the same results for tap water and filtered water, which is very disappointing.

3. The reading screen doesn't work properly and the company does not answer the complaints, which was very frustrating.

4. It is a very cheap product with cheap quality. It is not waterproof and causes rust on the battery, leading to concerns about its durability.

5. The user tested the water a couple of times and the meter showed different results each time, which is considered a big problem with this meter.

6. According to the comments, there was no chart showing the meaning of the results.

7. It is a cheap unit that has a dark screen which makes it challenging to read the values.

Conclusion

TDS or Total Dissolved Solids is a value or rating that tells you about the purity and quality of the water that you are drinking or using. To check the TDS value, you can use one of the best TDS meters listed above. Alongside these different TDS water meters, we have explained all their specifications and features, so you will be able to choose the best product according to your budget, purpose, etc. The HoneForest HFTDS-M7 TDS Meter, VIVOSUN pH and TDS Meter Kits, and HM Digital TDS-EZ Water Quality TDS Tester stand out as three great options for people who want to find the best mix of features, style, and price.

What is the difference between a TDS meter and an EC meter?