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 （2025 NEW）
Condition: New
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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
Sunday, Sep 13
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Features
- 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
Product Dimensions: 4.1 x 1.18 x 0.59 inches
Item Weight: 4.2 ounces
Manufacturer: EKOOTIMO
Item model number: a4
Batteries: 1 CR2032 batteries required. (included)
Date First Available: September 2, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Sep 13
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.
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Learn more about financing & leasing here.
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Top Amazon Reviews
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
The 4-in-1 Digital Water Quality Tester is easy to use and gives quick, accurate readings for TDS, EC, and temperature in both °C and °F. It’s great for testing drinking water, in which I purchased it for. The screen is clear and color-coded, making it simple to understand the results. It’s compact, lightweight, and a helpful tool for anyone wanting to monitor water quality at home. Overall, a great value for peace of mind about the water you use. After using it at home, made me even happier that I don't drink household water and use bottled water for everything. I have stopped using the filtered water from the refrigerator and ice because it made me realize that isn't the best water quality either, which is very concerning. Now I take this with me everywhere.
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Reviewed in the United States on July 20, 2025 by Kathyann M.
This is a life saver.
Reviewed in the United States on July 13, 2026 by William Tipton
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
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Reviewed in the United States on March 26, 2026 by omi
Seems to work just fine. No calibration needed. Feels a little cheap material wise but who cares when it does its job for such a low price. Only complaint was that they put the battery warning sticker right over the instructions
Reviewed in the United States on July 13, 2026 by Mindsynk
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
Arrived with soil on and opened packaging but seems to work well
Reviewed in the United States on June 22, 2026 by Brenda
Tested and it works well
Reviewed in the United States on August 8, 2026 by Harun Aslan