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💧 Stay ahead of water quality—because pure water is non-negotiable!
The iSpring TDS 3-Button Digital Water Quality Test Meter is a professional-grade handheld device that measures Total Dissolved Solids (TDS) in parts per million (ppm) and water temperature with high accuracy. Designed for both indoor and outdoor use, it features a clear digital display, durable lightweight construction, and an energy-saving auto-off function. Ideal for monitoring drinking water, filtration systems, aquariums, hydroponics, pools, and industrial applications, it comes with a protective carrying case and is supported by lifetime customer service and a 30-day money-back guarantee.






| ASIN | B00IDBZ1A2 |
| Additional Features | High Accuracy |
| Age Range Description | Adult |
| Best Sellers Rank | #45,125 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #43 in Lab pH Meters |
| Brand Name | iSpring |
| Color | Grey |
| Customer Reviews | 4.0 4.0 out of 5 stars (886) |
| Display Type | Digital |
| Global Trade Identification Number | 00662425070015 |
| Included Components | 1 TDS meter |
| Indoor Outdoor Usage | Indoor, Outdoor |
| Item Length | 7 Inches |
| Item Type Name | High Accuracy TDS Meter with Temperature Function |
| Item Weight | 0.11 Pounds |
| Manufacturer | iSpring |
| Model | TDS3-FBAK |
| Model Name | TDS 3-Button Digital Water Quality Tester |
| Outer Material | Plastic |
| Part Number | TDS |
| Power Source | Battery Powered |
| Product Care Instructions | Hand Wash Only |
| Response Time | 2 minutes |
| Reusability | Reusable |
| Style Name | Contemporary |
| UPC | 662425070015 |
| Unit Count | 1.0 Count |
| Warranty Description | 30-Day Money Back Guarantee. Extended Warranty upon Registration and Lifetime CS and Tech Support from iSpring in Atlanta, GA. |
S**Y
Like iSpring's quality and pricing.
I bought this Hardness Test Meter when I purchased my iSpring RCC7 system. It works great and is a must have for an RO system. This unit is still working fine for the last 8 years, I'll probably have to replace the battery one of these days. I really appreciate iSpring's quality and pricing.
B**E
Very High Quality Test Meter
I have used this test meter for many years and it is still working well. It is well made and when comparing it to other ppm meters it seems very accurate. All the ispring products I have used are outstanding quality. If you ever do have a question about installation or an issue with any product you purchased from them they are there to help! There costumer service is the best I have ever seen! Sean has helped me trouble shoot and also offered quick and easy assistance with parts and filters even when my system was no longer in warranty. You will not find a better customer service department anywhere!!
J**Z
Water tester
This worked great with our water well testing.
J**Y
Does not work out of the box
Very cheaply made. I'm not sure the battery's dead or what the device does not turn on/work out of the box. Tried to call the number on the box for service, nobody answers the phone after tried multiple times. Horrible!
M**J
Tds meter does the job
Sean helped me out and replaced mine, great customer service
J**N
Appears accurate and really handy to have!
So this little baby let us know that the new home we bought has a refrigerator with the water dispenser/ice cube maker hooked up to a water source that comes from the softener! Seriously. What contractor does that? The prior occupant was an older lady who probably has sky high blood pressure drinking softened/salted cold water and ice cubes from the frig. That is so sad. The frig filter cannot filter out all the salt. It tested around 750 ppm. 200 less than outdoor faucet water. If it had non siftened water and a new frig water filter it should have tested under 100. Unfiltered tap water from the kitchen sink that isn't hooked up to a softened water source tested at 750 ppm. Water from the sink side reverse osmosis tested at 50 ppm. Distilled water (just for fun to see if the unit is anywhere close to accurate) was zero. Yay! The case is handy and it will ensure the cap for the unit won't get lost. The digital readout could be a bit clearer to read, but no real complaint enough to take away a star. The unit clearly warns that it is not water proof and to only submerge it up to 2 inches. We use the cap to hold the water for testing and then that ensures the unit won't get damaged.
S**Y
DOA
Item worked fine after I replaced the dead batteries that were in it when I received it new.
J**.
Easy to use. Is it accurate?
I would need another 100% accurate method of testing to have a baseline know how accurate this device is. So, asking people to rate this device’s accuracy is somewhat pointless (unless of course they have expert knowledge regarding water, which i do not). Maybe find a review by a water expert to know this device’s accuracy. My main purpose of purchasing this device was to find out if (and how well) my water filtration system was/is working. I’m satisfied with the results. But I’m also blindly assuming this device is mostly accurate. Assuming it’s accurate, great value for the price.
A**R
Absolutely brilliant!!!!, Easy to use, true and accurate results, does what it says
Y**.
Très simple à utiliser
J**W
Our well water tests anywhere from 700-800 TDS. This can vary from samples taken a minute after another. I am not sure how normal this is for samples to fluctuate on the same line this way but in comparison to testing the filtered water samples from my RO faucet I have to say it seems the tester seems pretty accurate. My filtered water samples read steadily from 21-22 TDS. Store bought cooler water reads at 11 TDS from spigot. I'm giving this item a 5 star review because I have no reason to believe it isn't operating as designed to despite large fluctuations in close water samples from tap. I think as well water sits in lines there is more TDS, the longer I run lines before I take the sample the lower the TDS number readings are. This is consistent.
G**8
FUNZIONA PERFETTAMENTE OTTIMO PRODOTTO
J**R
Top Gerät, funktioniert super, alle Werte schnell verfügbar.
Trustpilot
3 days ago
2 weeks ago