4 in 1 TDS Meter Digital Water Quality Tester TDS/EC/Temperature（°C/°F） | 0-9999 ppm | Accurate and Professional for Drinking Water, Hydroponics, Aquariums, RO Systems, Pool （2026 NEW）
Condition: New
$6.99
Save $3.00
was $9.99
Buy Now, Pay Later
As low as
$1
/ mo
Learn more
- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Saturday, Oct 31
Recently Viewed
At a glance
- Condition
- New
- Model
- a4
- Dimensions
- 4.1 x 1.18 x 0.59 in
- Weight
- 1.76 oz
- Batteries
- 1 CR2032 batteries required. (included)
Features 7
- Reliable Accuracy Our TDS Meter 4-in-1 Digital water tester combines a high-performance smart chip with a rugged titanium probe for fast, consistent results. Perfect for drinking water, aquariums, tap water, and more - trust every drop
- 4-in-1 Water Quality Tester Switch between TDS, EC, and F / C with one tap. Get instant, accurate readings for tap water, drinking water, or hydroponics anytime, anywhere
- Smart Color Alerts & Big-Screen Clarity Our profrssional water hardness tester features an extra-large LCD with dual-backlit colors for instant, day-or-night readings.Red backlight = Non-potable water warning (>40+ ppm) , Green backlight = Safe for direct drinking (<40 ppm)
- Long-Lasting Power With an efficient 3V (CR2032) coin cell battery (easy to replace) and smart auto-shutoff, our tester runs 2x longer than standard 1.5V models. Just 1 battery lasts 12+ monthseven with daily use!
- Durable & Reliable Design TDS Meter 4-in-1 Water Tester Features a tough ABS outer shell with comfy non-slip grips for easy handling. The advanced dual-core processor inside gives you fast, ultra-precise readings every time
- Worry-Free Support Enjoy a 2-year warranty with 18-hour/day, 7-day/week customer service. Got questions ? Our team is always ready to assist!
- Product List Body x1, Built-in Battery x1, Operation Manual x1, Outer Packaging x1
Specs 5
| Product Dimensions | 4.1 x 1.18 x 0.59 inches |
|---|---|
| Item Weight | 1.76 ounces |
| Manufacturer | EKOOTIMO |
| Item model number | a4 |
| Batteries | 1 CR2032 batteries required. (included) |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Oct 31
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Good Quality Cheaper Price
This thing is a steal at the price. Used it during my trip and you can see the difference in results with many samples of water. Gave it to someone who really needed it. Definitely buying another one
Reviewed in the United States on September 28, 2026 by Antonio V
Amazing digital water testing meter
This digital water testing meter is amazing. You will get an accurate results. Use it to test your water so you can be sure of what you are drinking.
Reviewed in the United States on October 1, 2026 by Nnabuaku
You need one
Happy I finally got one. Water I thought was good wasn’t and water I thought wouldn't be is.
Reviewed in the United States on August 17, 2026 by H G
Accurate and easy to use
So easy to use. Tested my water and a friend water from a different location. It appears to have readings that are very accurate.
Reviewed in the United States on September 26, 2026 by Camper Girl
GOOD apparatus
Good apparatus for water quality. Reliable and accurate.
Reviewed in the United States on September 27, 2026 by Amazon Customer
Great amazing worth it!!! Try it
I’m so truly happy with this purchase I purchased 5 different versions of water and collected different top water as well. And I was stunned by the results I was like a child in a mad scientist experiment ( I’m a grandmother of 12) but call my kids and ran tests in the waters they ask where I got it? I didn’t had a chance to answer my daughter screams AMAZON!!!! I already ordered mine for camping!!!! That was my afternoon 🤭🤪🤣🤣🤣it’s so worth it.tku
...
show more
Reviewed in the United States on March 26, 2026 by omi
It Works but the Backlighting I don't Care For
I just wanted a backlit EC meter, this one looked right, but the back lighting changes based on high (Red) or low (Green). Yes I can still see my numbers but the red is harder to read. Does nanyone make a reliable EC meter with just a green backlight? This is for Hydro, not drinking water. I'll use it to work with, until I find a better solution.
...
show more
Reviewed in the United States on October 1, 2026 by FLADAWG01
Good going after first test
I just took this out of the box. Here are my first PPM readings: Distilled water 3 Tap water 174 Brita filter 106 Pur purified 25 Food Lion Alkaline 27 Everything worked just as described in the packaging. So far very good.
Reviewed in the United States on June 20, 2026 by RonaldB