What kind of battery does it have?

1 x 3V button battery CR2032 , it's included in the water tester. Sincerely hope you enjoy the products we sell on Amazon!

how can i test if the unit is accurate could i use distilled which i assume should be zero, thanks tom

Thanks for your question. This TDS meter is pre-calibrated in factory, no need calibrate again by customer, we do this to prevent as many calibration related mistakes as possible, and it's easier to use. To maintain the accuracy, it's better to rinse the probe with distilled water after each use. For your mentioned distilled water, it should read 0 ppm theoretically, but in actual application, if you can't keep test condition very clean, it may read 0-2ppm usually.

Can this also check for ph ?

It Does not. It measure TDS , EC and Temperature 3 in 1. PH Meter is another tester.

Has anyone else experienced this reading into the hundreds on very low ppm water after a couple weeks of use? solutions?

Are you rinsing the probe with distilled water after each use and patting it dry, if not, dried solids will build up on the probe and render the measurements inaccurate.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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HoneForest Water Quality Tester, Accurate and Reliable, TDS Meter, EC Meter & Temperature Meter 3 in 1, 0-9990ppm, Ideal Water Test Meter for Drinking Water, Aquariums, etc.

Product ID: 266500156

💡Backlit LCD with color-coded alerts

⚙️0-9990 ppm TDS range

🌡️Automatic Temperature Compensation

€ 52.83

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Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Stay ahead of water quality — because your health deserves precision!

READY WHEN YOU ARE - Comes with protective case, 3-year warranty, and 90-day money-back guarantee.
PRECISION YOU CAN TRUST - Titanium alloy probe + ATC ensures ultra-accurate readings every time.
VERSATILE WATER TESTING - Perfect for drinking water, aquariums, hydroponics, pools, and more.
EFFORTLESS INSTANT READINGS - Auto-lock and backlit display deliver stabilized results in seconds.
3 IN 1 WATER QUALITY POWERHOUSE - TDS, EC, and temperature measurements combined in one sleek pen.

This advanced 3-in-1 Water Quality Tester combines TDS, EC, and temperature measurement with a premium titanium alloy probe and automatic temperature compensation for highly accurate readings from 0 to 9990 ppm. Featuring a backlit LCD with color-coded alerts and auto-lock function, it delivers instant, reliable results for drinking water, aquariums, hydroponics, and more. Lightweight and portable with a protective case, it’s factory calibrated and backed by a 3-year warranty and 90-day money-back guarantee.

Specifications

Asin	B073713G5F
Date First Available	1 November 2017
Is Discontinued By Manufacturer	No
Item Model Number	HFTDS-M7
Manufacturer	HoneForest
Product Dimensions	15.98 x 2.9 x 1.5 cm; 46 g

Reviews

User

Easy to use

Does the job

30.05.2026

User

يستحق الشراء ان كنت تبحث عن جهاز tds يعمل بشكل جيد

الجهاز ممتاز ويعمل بشكل جيد والاجمل انه يعطيك الاضاءة الخضرا في الشاشة عندما تكون نسبة المعادن في الماء اقل من 50 والاكثر تكون الشاشه حمرا …. تم تجربته ومقارنته مع اكثر من ثلاثة اجهزة tds لدي وكان هو الافضل مقارنة بالاسعار

2.03.2023

User

I would purchase again!!

This has worked really well. I'm glad I gave this tester a chance. I wish it had a lanyard attachment though, that’s the only drawback to me. If I put it down in my hydroponic bucket, it’s hard to hold it and press the hold button at the same time. I constantly worry about dropping it in the nutrient solution. But as far as being accurate, I’m very well pleased.

12.09.2026

User

Great product

Works very well for me. We like it.

18.05.2025

User

Efficient

Good and efficient

3.02.2024

User

Very easy to use.

Very easy and accurate

1.05.2026

User

Vien listo para usarse

Funciona inmediatamente

17.09.2026

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€ 52.83

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cyprus.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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