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TDS Meter, 3 in 1 TDS, EC & Temperature Meter, Drinking Water PPM Meter, Digital Water Testing kits, no Installation Needed
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Purchase options and add-ons
- ✔[ 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 tds meter 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.
Additional Details


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Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 6.4 x 1.2 x 0.6 inches; 1.44 ounces
- Item model number : YL-TDS2-A
- Department : labsupplies
- Date First Available : October 16, 2018
- Manufacturer : Hofun
- ASIN : B07GNMY8ZH
- Best Sellers Rank: #1,226 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- Customer Reviews:
Product Description


Hofun TDS Water Quality Tester
CONCERNED ABOUT YOUR WATER QUALITY?
Hofun TDS Water Tester works like a guard who helps monitor water quality to tell you whether the water meets standards of drinking, aquarium, RO/OI system, etc, so that you have a clear mind of water status and take measures to guard water safety for your family.
WHAT IS TDS AND WHY SHOULD YOU CARE?
TDS = Total Dissolved Solids, which are the inorganic salts and organic matter in a liquid. The lower the TDS level, the purer the water is. Conversely, higher TDS levels indicates more particles dissolved in liquid.
SPECIFICATIONS
* Measuring Range: TDS: 0 - 9990 ppm (parts per million) Conductivity: 0 - 9990µs/cm Temperature: 32.0 - 212°F (0 - 99°C) * Accuracy:±2% F.S * Size: 6.37 x 1.14 x 0.59 inches
FEATURES
- Big backlit LCD for easy reading. Green for TDS≤40; Red for TDS>40
- Auto-Off in 2 Minutes to conserve battery
- A colorful TDS chart on the back to explains ppm readings
YOUR FIRST CHOICE: HOFUN TDS METER
RELIABLE TDS METER WITH ACCURATE & QUICK MEASUREMENT
Equipped with premium quality probe, TDS water quality tester enables quick and convenient test. In addition, advanced and reliabl IC ensures measurement accuracy, which reaches 0-9999ppm, making it fits multiple uses, drinking water test, swimming pool, laboratory, Hydroponics, aquarium, well water, etc.
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(Tds meter ,ec meter, Temperature Meter 3in1).Not only been convenient for you, but also saves your time and money, this water testing kits for drinking water, is absolutely a helpful water test kit for your life.
EASY READING BIG BACKLIT LCD DISPLAY
Hofun ppm 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.)
A Must-Have Tool for Kitchen, Aquarium,etc.

The water quality tester is the perfect water hardness test kit for measuring and tracking TDS level of your water to check whether your water filter is doing its job and when to change the filter. With TDS water tester, you can tell whether your water supplier is doing their job. All you need to do is to put it in the water and test.
Videos
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EASY & accurate water testing! MUST SEE!!!
⭐ Rachel Lusk ⭐
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0:55
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PERFECT FOR SHRIMP! #fish #pets #reptiles
DanTheTurtleMan
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0:58
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How clean is this water?
🌟Jack Lawson - Recon Survival
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0:32
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Customer Review: Meter is severely off!
Jonathon Renuart
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0:13
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Hofun tds meter
Hofun - Click, if you have any questions
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0:41
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Customer Review: Show ya how innacurate this is
Darren
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the TDS meter works well and is easy to use, with a large, illuminated display that's quick to read. They appreciate its value for money, efficient water quality testing capabilities, and fast results. The accuracy and build quality receive mixed reviews - while some find it accurate out of the box and solid, others report temperature readings being off by 8-10 degrees F and the device falling apart during use.
AI-generated from the text of customer reviews
Customers find that the TDS meter works as described and is very useful, with one customer noting that the results are consistent.
"...Worked fine out of the box, it only took a minute or two to figure it out. It worked as expected and I do recommend it...." Read more
"This seems to be a very reasonably priced meter that works perfectly well for that price...." Read more
"...So I believe this item really works. One of the things I really like about this meter is that the display is nice and bright...." Read more
"Works well. Used to measure TDS between regular tap and our newly installed water filter." Read more
Customers find the TDS meter simple to use and read, with clear instructions, and one customer mentions its one-button operation.
"...This has good clear readability and easy operation. Also just a coin cell battery so it’s light...." Read more
"...makes it easy to read, even in low light, and the quick and simple one-button operation is a real convenience...." Read more
"Great, product, and price. Easy to use. It's durable, easy travel size. The design is easy to use and read." Read more
"...It’s great to test and easily and quickly get results. I even bring it to restaurants lol." Read more
Customers appreciate the TDS meter's ability to test water quality, being able to use it anywhere and check household water, with one customer noting that bottled and reverse osmosis water tested better than tap water.
"...The hot tub water had the highest and the reverse osmosis had the least amount of dissolved solids...." Read more
"...Overall, it’s a reliable tool for monitoring water quality. Also, I feel the meter is a bit bulky for its functionality." Read more
"Great tester. I used it at home and found our tap way over the poor quality so I had a reverse osmosis system installed...." Read more
"...I think the PPM meter works, I just don't know why it has a red lit background on the display." Read more
Customers find the TDS meter to be good value for money, with one customer noting it's an inexpensive way to check hard water.
"...It’s inexpensive and accurate enough for most homeowners or hobbyist. This has good clear readability and easy operation...." Read more
"...For the price, it offers excellent value—combining TDS, EC, and temperature measurements in one device...." Read more
"This seems to be a very reasonably priced meter that works perfectly well for that price...." Read more
"Great, product, and price. Easy to use. It's durable, easy travel size. The design is easy to use and read." Read more
Customers appreciate the TDS meter's readability, noting its large, bright display and illuminated screen that's easy to see.
"...This has good clear readability and easy operation. Also just a coin cell battery so it’s light...." Read more
"...The large backlit LCD display makes it easy to read, even in low light, and the quick and simple one-button operation is a real convenience...." Read more
"...The display is good. I didn't see any way to adjust the meter, so if it drifted over time, there's no way to correct it...." Read more
"...One of the things I really like about this meter is that the display is nice and bright...." Read more
Customers appreciate the meter's speed, as it provides readings in seconds and measures TDS quickly.
"...backlit LCD display makes it easy to read, even in low light, and the quick and simple one-button operation is a real convenience...." Read more
"...It’s great to test and easily and quickly get results. I even bring it to restaurants lol." Read more
"Measures TDS quickly but very slow to get to correct temperature reading. I use it for my aquariums...." Read more
"...Now we know better about the water we are drinking and using. Really fast to results. And it is reproducible too." Read more
Customers have mixed experiences with the TDS meter's accuracy, with some reporting very accurate readings while others note that temperature readings are consistently off by 8-10 degrees F.
"...It’s inexpensive and accurate enough for most homeowners or hobbyist. This has good clear readability and easy operation...." Read more
"...The numbers checked out. The hot tub water had the highest and the reverse osmosis had the least amount of dissolved solids...." Read more
"Not consistent but close enough. I have a more expensive one and got this as a traveling back up for hydroponics cannabis ...." Read more
"...it offers excellent value—combining TDS, EC, and temperature measurements in one device...." Read more
Customers have mixed opinions about the TDS meter's build quality, with some finding it reliable and solid, while others report that it is poorly made and fragile.
"Great, product, and price. Easy to use. It's durable, easy travel size. The design is easy to use and read." Read more
"...PPM Meters all share one flaw — they are fragile and break easily! Expensive meters break just as quickly and easily as the inexpensive pens...." Read more
"The device is never wrong; This device does its job and it does it well...." Read more
"Not as good as the built in meter of my water filter system, but it works." Read more
Reviews with images

Works well and is easily replaceable
Top reviews from the United States
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- Reviewed in the United States on December 29, 2024I’ve owned dozens of PPM/EC pens, meters and testers over the decades and this is the meter recommend for PPM. It’s inexpensive and accurate enough for most homeowners or hobbyist. This has good clear readability and easy operation. Also just a coin cell battery so it’s light.
PPM Meters all share one flaw — they are fragile and break easily! Expensive meters break just as quickly and easily as the inexpensive pens. They just aren’t buy it for life products.
A budget meter will give up some accuracy compared to more expensive meters on the market but, the budget meter is still plenty accurate for a home owner/hobbyist. When it fails after a year or two, throw it out and buy a new one.
My only complaint is that it doesn’t have a loop to attach a string to so I could hang it from a hook when not in use.
5.0 out of 5 starsI’ve owned dozens of PPM/EC pens, meters and testers over the decades and this is the meter recommend for PPM. It’s inexpensive and accurate enough for most homeowners or hobbyist. This has good clear readability and easy operation. Also just a coin cell battery so it’s light.Works well and is easily replaceable
Reviewed in the United States on December 29, 2024
PPM Meters all share one flaw — they are fragile and break easily! Expensive meters break just as quickly and easily as the inexpensive pens. They just aren’t buy it for life products.
A budget meter will give up some accuracy compared to more expensive meters on the market but, the budget meter is still plenty accurate for a home owner/hobbyist. When it fails after a year or two, throw it out and buy a new one.
My only complaint is that it doesn’t have a loop to attach a string to so I could hang it from a hook when not in use.
Images in this review
- Reviewed in the United States on December 20, 2024I got this for my hot tub, as a tool to know if my water was good or needed changed. I do use a test kit, which tests, ph, chlorine, etc, but I have a hard time knowing when I need to change the water.
When I got this I tested my tap water, my reverse osmosis, fridge filtered water, and hot tub water. The numbers checked out. The hot tub water had the highest and the reverse osmosis had the least amount of dissolved solids.
Worked fine out of the box, it only took a minute or two to figure it out. It worked as expected and I do recommend it.
Good news was my hot tub water was still good, and I don't have to worry about changing it now.
- Reviewed in the United States on August 22, 2024I bought the TDS Meter to measure the TDS of my RO filter, and it’s been quite useful. For the price, it offers excellent value—combining TDS, EC, and temperature measurements in one device. The large backlit LCD display makes it easy to read, even in low light, and the quick and simple one-button operation is a real convenience.
However, I’ve noticed that the standard for indicating water quality with green for <40ppm and red for >40ppm might not align with all standards I’m familiar with. Despite this, the meter still effectively serves its purpose for my needs. Overall, it’s a reliable tool for monitoring water quality. Also, I feel the meter is a bit bulky for its functionality.
4.0 out of 5 starsI bought the TDS Meter to measure the TDS of my RO filter, and it’s been quite useful. For the price, it offers excellent value—combining TDS, EC, and temperature measurements in one device. The large backlit LCD display makes it easy to read, even in low light, and the quick and simple one-button operation is a real convenience.Affordable and Efficient Water Quality Testing
Reviewed in the United States on August 22, 2024
However, I’ve noticed that the standard for indicating water quality with green for <40ppm and red for >40ppm might not align with all standards I’m familiar with. Despite this, the meter still effectively serves its purpose for my needs. Overall, it’s a reliable tool for monitoring water quality. Also, I feel the meter is a bit bulky for its functionality.
Images in this review
- Reviewed in the United States on October 15, 2024This seems to be a very reasonably priced meter that works perfectly well for that price. We have a lot of TDS/EC meters around, some cheap some more expensive, and use them a lot, so we're pretty familiar with this tech. If you need measurements for your doctoral thesis, then you'll want something more accurate and you'll pay accordingly. But for most of the things most people want a TDS/EC reading for, this will work very well and there's no reason to pay more. I ordered two, and compared them with several other meters we have, some considerably more expensive, on several samples of water as well as against the NaCl calibration solutions we keep on hand. One was within 5%, the other about 7%, which is better than other similarly priced meters I've used, and for the ranges most people will see, no problem. The display is good. I didn't see any way to adjust the meter, so if it drifted over time, there's no way to correct it. But my experience is that unlike pH meters, that's rarely a problem with TDS/EC meters, so I consider that a minor complaint.
- Reviewed in the United States on March 23, 2025Great, product, and price. Easy to use. It's durable, easy travel size. The design is easy to use and read.
- Reviewed in the United States on July 18, 2024Great tester. I used it at home and found our tap way over the poor quality so I had a reverse osmosis system installed. It’s great to test and easily and quickly get results. I even bring it to restaurants lol.
- Reviewed in the United States on February 12, 2024This tool was a game-changer when I fist got it. Shrimp acclimation was so much easier. But after a year the battery didn't seem to last as long, or the inside parts seem to wobble in the case. There's lots of empty space between the breadboard and the case. So use it carefully, treat it gingerly, keep it in a protected place, not leaning against the shrimp tank or in a pile near the water testing kit. Maybe you'll get more use out of it. I bought a different brand when I replaced it.
- Reviewed in the United States on August 29, 2023I recently purchased a Water Distiller and I wanted to make sure that it really was working. After doing some research I ended up purchasing this TDS Meter because it got so many great reviews and it was a really good price. I'm not trying to use Meter for any crazy science experiments I just want to make sure the PPM of my distilled water is low so that I can use it in my Espresso Machine and my Ice Machine.
I first tested this on the filtered water from my fridge. It measured around 300 PPM. I then measured the distilled water from my machine 5 PPM. I also measured some distilled water from the store which came in around 1 PPM. So I believe this item really works. One of the things I really like about this meter is that the display is nice and bright. Also the Meter comes with a case for storage, its not necessary but it is nice to have so that the Meter isn't just sitting out in the open.
Top reviews from other countries
- jorllaReviewed in the United Arab Emirates on December 29, 2024
1.0 out of 5 stars Bad product
After a few usings, device does not work anymore.
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AhmedReviewed in Egypt on December 16, 2024
1.0 out of 5 stars المنتج وصل مفتوح مش فى علبة مبرشمة و صل فى علبة بلاستيك من غير الكرتونة
و مستعمل مش جديد و غير دقيق بالمره
- Ahmed H.Reviewed in Saudi Arabia on December 13, 2023
5.0 out of 5 stars Accurate
I use it for my water tank, it gives me the correct reading
- Ed StevensReviewed in Canada on July 18, 2020
5.0 out of 5 stars Works well.
Its resolution is solid. It read exactly what I expected. And it has good buttons. Light up display. If it dies I will update. I used it to measure nutrients.
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ahmed saleh al khalafReviewed in Saudi Arabia on July 21, 2024
3.0 out of 5 stars ١
يفتقد للدقة