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TDS Meter Digital Water Tester - ppm Meter, EC & Temperature Test Pen 3-in-1 | Easy to Use Water Quality Tester | Ideal for Testing RO Drinking Water Hydroponics Aquarium Swimming Pool & More (Green)

4.3 4.3 out of 5 stars 4,268 ratings
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  • ✅ OUR SIMPLEST, FASTEST TDS METER YET - Just dip in the meter, stir, and get your results in seconds. No calibration or setup needed, you can use it straight out of the box. Follow the step-by-step instructions then check the easy-to-read screen.
  • ✅ UPGRADED ACCURACY THAT LASTS - With the titanium alloy probe and the latest sensors, you can get almost exact readings every time. What’s more, the meter can be easily recalibrated for extended precision whenever needed.
  • ✅ SUITABLE FOR ANY TYPE OF TDS OR EC TESTING - Check the TDS or EC of your aquarium, pool, or any water source. You can determine the effectiveness of your RO, DI, or distillation unit, check the nutrient levels of your hydroponic setup, and more.
  • ✅ RESULTS YOU CAN UNDERSTAND - Your free (opt-in only) emailed user guide explains exactly what the results mean, and what you may want to do about them. If you have any questions, just ask our team of EPA water quality experts. We’re here to help!
  • ✅ SAVE THE MONEY AND HASSLE - Instead of forking out for an expensive lab test or professional equipment, you can get reliable results from home. This ppm meter can also be taken anywhere with you in the free leather case, ready to test on the go.

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Product details

  • Package Dimensions ‏ : ‎ 6.5 x 1.46 x 1.26 inches; 2.08 ounces
  • Batteries ‏ : ‎ 1 C batteries required. (included)
  • Date First Available ‏ : ‎ September 24, 2019
  • Manufacturer ‏ : ‎ Health Metric
  • ASIN ‏ : ‎ B07V7YZX81
  • Customer Reviews:
    4.3 4.3 out of 5 stars 4,268 ratings

Product Description

tds meter hold water tester ppm digital quality testers for drinking ec swimming pool meters pen

IS YOUR WATER QUALITY UP TO STANDARD?

TDS testing is an essential step to finding out the general quality of any water. This meter is like a “watchdog” that tells you if the water is the way it should be, or if there’s something to worry about.

tds meter hold water tester ppm digital quality testers for drinking ec swimming pool meters pen

GET YOUR WATER QUALITY READINGS IN SECONDS

This meter shows the Total Dissolved Solids (TDS), Electrical Conductivity (EC), Temp °F, and Temp °C of any liquid within just a few seconds. Equipped with the latest sensors and titanium alloy electrodes, the factory-calibrated meter gives you TDS or EC readings straight out of the box.

All you need to do is dip the meter in water, give it a stir, and watch the numbers lock in on the easy-to-read backlit LCD screen. You’ll then get an idea of what your water quality is really like.

tds meter hold water tester ppm digital quality testers for drinking ec swimming pool meters pen

THE CLOSEST THING TO LAB-QUALITY RESULTS FROM HOME

Even though no TDS meter can replicate the accuracy of an expensive laboratory instrument, it’s ideal for getting a close estimation.

  • TDS: 0-9999 ppm
  • Conductivity: 0-9990 μs/cm
  • Temperature range: 32-176°F and 1-80°C.
  • Battery: 1 x 3V Button Cell CR2032
  • Conversion factor: NaCl
  • Auto data-hold: lock and record readings
  • Auto-off function for extended battery life

Factory calibrated with manual calibration capability!

tds meter hold water tester ppm digital quality testers for drinking ec swimming pool meters pen

tds meter hold water tester ppm digital quality testers for drinking ec swimming pool meters pen
Making the complex simple

We do this by making water testing as easy as possible. You can always count on our team of water quality experts to help you understand what it all means. Above all, we’re here to help!

CHECK THE QUALITY OF YOUR WATER FOR ALMOST ANY APPLICATION

The great thing about this meter is that it works for almost any type of water testing you have in mind:

  • Private water sources like wells
  • RO, DI, or distillation unit effectiveness
  • Nutrient levels in hydroponic setups
  • Aquariums or fish tanks
  • Swimming pools, hot tubs, and spas
  • Many more

NOTE: TDS meters cannot be used for testing water hardness. Look for further explanation in the guide.

s s s s tds meter hold water tester ppm digital quality testers for drinking ec swimming pool meters pen
Water Hardness Test Strips Drinking Water Test Kit Well Water Test Kit Heavy Metals Test Kit Coliform Bacteria Test
Customer Reviews
4.4 out of 5 stars
2,718
4.3 out of 5 stars
2,114
4.3 out of 5 stars
1,988
4.2 out of 5 stars
871
4.5 out of 5 stars
1,675
Test For: Total Hardness Lead, Coliform Bacteria, Copper, Nitrate & Nitrite, Chlorine, Total Alkalinity, pH, Total Hardness Coliform Bacteria, Nitrate & Nitrite, Manganese, Hydrogen Sulfide, Total Alkalinity, Total Hardness, pH Lead, Iron, Mercury, Copper Coliform Bacteria

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Customer reviews

4.3 out of 5 stars
4.3 out of 5
4,268 global ratings

Customers say

Customers like the value, quality and size of the water meter. For example, they mention it's a great product for the price, works well and is compact. Customers also like the instructions. That said, opinions are mixed on temperature correction, accuracy, and readability.

AI-generated from the text of customer reviews

587 customers mention523 positive64 negative

Customers like the quality of the tool. They mention that it works well, is excellent, and very accurate. They say it's handy and provides useful information. Customers also say that it'll work fantastically for measuring the nutrients in their hydroponic units.

"This little water tester is simple to use, and very nice. It comes with a cute vinyl case, and then you just pop off the plastic probe cover...." Read more

"...added features of temperature and electric current measurement is very useful as well, and was the reason I chose the TDS/EC over other devices...." Read more

"Got one on Little Tech Girl’s recommendation. Working out fantastically for measuring the nutrients in my Aerogarden type of hydroponic units...." Read more

"Works great, but I still don't know what the numbers should be." Read more

279 customers mention269 positive10 negative

Customers find the instructions for the tool simple, easy to read, and accurate. They also appreciate the separate tips in the included PDF. Overall, customers are satisfied with the instructions provided with the tool.

"This little water tester is simple to use, and very nice. It comes with a cute vinyl case, and then you just pop off the plastic probe cover...." Read more

"...I know when it's time to change my filters it's also very simple to use made of good plastic put pretty sure if you strap on it it might break and..." Read more

"...This product works as advertised, is simple to use, and gives consistent results...." Read more

"...Quick and easy." Read more

155 customers mention138 positive17 negative

Customers like the value of the meter. They say it is great for the price, cheap, and has amazing performance. Some customers also mention that it has a pretty good result for a low end meter and better than any of the others they have owned.

"...if you drop it it it'll survive more than a couple drops over very good for the price 👍..." Read more

"...This is a pretty good result for a low end meter and better than any of the others I have owned before...." Read more

"The TDS tester works wonderful. It is a great value for the price. Caution is required when taking it out of the little vinyl case...." Read more

"...I like the hold feature and the C and Farenheit scales. Good price point. I'm going to do more testing. Like test tap water then distilled water...." Read more

24 customers mention19 positive5 negative

Customers like the size of the tool. They say it is a good portable tester, and is easy to use. Customers also appreciate the compact efficiency of the design. Overall, customers find the product to be a must have and carry friendly.

"...So I was pleased. Such a small and handy meter to use. Now I mostly use this TDS meter to test the EC of the fertilizer mix." Read more

"...We appreciate the PDF file sent. They can be easily stored on the computer and the extra information was great...." Read more

"...Most remarkable product. A must have product- and Carry friendly too.Don't leave home without one of these...." Read more

"...It's a little small for my hand to hold. Might be better to put the pool water in a beaker...." Read more

199 customers mention135 positive64 negative

Customers are mixed about the accuracy of the water meter. Some mention that it's reasonably accurate, and holds a stable calibration. However, others say that the readings vary slightly with each different water sample, and are off by 127 ppm or more. Pressing the on/off button will not increase the calibration value, and the reading would reset.

"No need to calibrate it, because it came calibrated...." Read more

"Pretty good very accurate might be off by a couple ppm max I would say 2 but I get a good reading from my osmosis system I know when it's time to..." Read more

"...The readings vary slightly with each different water sample...." Read more

"...The meter accuracy is just a good but the build and quality looks like they’ve made some cuts to quality." Read more

35 customers mention24 positive11 negative

Customers are mixed about the temperature correction of the product. Some mention that the reading was accurate, while others say that it's off by 2+ degrees F. The temperature does not move off 34 degrees no matter how hot the water is, and it takes longer to equilibrate temperature. The readings doesn't have a third digit, so 103.5F comes up as 03.5.

"...(EC and temperature readings). I am a fan...." Read more

"...Unit is very accurate. Temp is only a couple of degrees off. Tested against two other thermometers...." Read more

"...My main concern is the temp is off by 2+ degrees F (tested against two of my kitchen thermometers and an infrared thermometer) and the reliability..." Read more

"...I understand that this can check water of different temperatures without effectingthe reading...." Read more

32 customers mention11 positive21 negative

Customers are mixed about the readability of the tool. Some mention it provides quick, precise, and repeatable readings. They also like that it gives an immediate reading and the hold button to save. However, others say that the display is dim and next to impossible to read. They say it doesn't accurately read, and that the meter gives a slightly different reading than other meters they own.

"...One more thing, when the hold function is active there is no indication on the display and it seems to go into hold mode automatically after a few..." Read more

"...First let me say this gives me a very good indication when to change my filters on these machines as well as knowing what I need to do for my..." Read more

"...It seems to be auto adding together, and I do not get individual reading for each amt’s added after...." Read more

"It’s cheaply made, hard to read the numbers. You need to hold it at certain angle to read it. Inconsistent readings." Read more

20 customers mention8 positive12 negative

Customers are mixed about the waterproofness of the product. Some mention that it takes care of their water problems and is well within acceptable ranges, while others say that it's not water proof and that the water is awful to worse.

"...The unit is not waterproof, so don't submerge the whole thing. The digital reading is immediate...." Read more

"...The reading had dropped down from about 160 to 4ppm. The water is nearly pure and devoid of particulates...." Read more

"...I'm sure glad I did. I found my tap water is really bad, around 900ppm. Thanks to the guides included I found it should be 500ppm or under...." Read more

"Not water proof works well other wise accuracy is great" Read more

Not sure - temp is a little off
4 Stars
Not sure - temp is a little off
The TDS & EC meter just arrived today. I'm a bit concerned that this didn't come in any sort of packaging that would convince me it's never been used. Just the storage case. One would think there would at least be a QC label over the cover to be sure the seal has not been broken. My main concern is the temp is off by 2+ degrees F (tested against two of my kitchen thermometers and an infrared thermometer) and the reliability of this meter seems to depend on ATC to measure TDS in water that isn't exactly 77 degrees F. I know 2 degrees isn't much but it also doesn't take an expensive thermometer to accurately measure water temp within 1 degree. I'm using this for hydroponics so I'll now need to purchase calibration solution to ensure my readings are accurate, which I intended to do eventually but not immediately. On the bright side, if this meter is accurate and the ppm of my tap water is 124, that's great news!
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Top reviews from the United States

Reviewed in the United States on December 18, 2017
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Reviewed in the United States on December 12, 2018
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Top reviews from other countries

Sandro
5.0 out of 5 stars Accurate, easy to use, a meaningful way to measure TDS.
Reviewed in Canada on February 18, 2022
TheZeke
4.0 out of 5 stars Easy to use, inexpensive and works fine.
Reviewed in Canada on June 4, 2021
Color: GreenVerified Purchase
2 people found this helpful
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Maya BeWell
5.0 out of 5 stars Super simple, practical and much needed - for water taste/health.
Reviewed in Canada on July 31, 2018
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Maya BeWell
5.0 out of 5 stars Super simple, practical and much needed - for water taste/health.
Reviewed in Canada on July 31, 2018
Comes ready to use - with battery installed - plus for seller . Best used for water : filter, hardness, aquaculture, hydroponics, pools.

MY USE: Bought for home / to test the efficiency of a Brita water filter . Been drinking tap water , deemed safe for drinking by the city. Bought a over the counter water filter and wanted to see the difference - if any . A TDS range from 50 to 150 is best for drinking. Pic 5/6 show the readings of 'carbon filter water' and 'tap water'.
IN BOX:: Comes with a carry case , and protective cap for electrodes . Dual electrodes measure .pic 4 Illustrated usage manual - with pics . Nice touch. - Would have liked a bit more detail on EC/TDS standards- But they have a website for more info.
Easy to change battery - the battery cap slides out easily- and pull the battery . Pic 3 . Battery is CR 2932- easily and cheaply available .
TIPS-
- keep the liquid below the immersion line , yet above the reading marker . pic 7
- always keep the electrode cap on to avoid damaging the prongs.
- testing 2 separate liquids , shake off the previous liquid completely bef inserting the tester into a new liquid - this will give accurate readings.
hope this helps!
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22 people found this helpful
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Ken Waldie
5.0 out of 5 stars Simple and accurate readings
Reviewed in Canada on August 16, 2023
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Ken Waldie
5.0 out of 5 stars Simple and accurate readings
Reviewed in Canada on August 16, 2023
This was my second purchase of an EC meter, and it's dramatically better than the first one. It is easy to use: I pull a small sample of a few ounces of water from my iDoo 12 pod hydroponic garden using a turkey baster, put it into a glass (see photo) and in seconds it give me an EC reading in microsiemens/cm. It has automatic temperature adjustment and needs only seconds to produce an accurate digital reading. I don't know what else you could expect for this price. This greatly simplifies nutrient control in my herb garden.
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Brendan Harris
3.0 out of 5 stars Works I suppose but not for what I wanted
Reviewed in Canada on February 23, 2019
4 people found this helpful
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