--- product_id: 48734853 title: "HM Digital tds ez Meter, Purple, 0-9990 ppm. Measurement Range" brand: "hm digital" price: "āļŋ2967" currency: THB in_stock: true reviews_count: 13 url: https://www.desertcart.co.th/products/48734853-hm-digital-tds-ez-meter-purple-0-9990-ppm-measurement store_origin: TH region: Thailand --- # 0-9990 ppm range Large LCD display 1000 hrs battery life HM Digital tds ez Meter, Purple, 0-9990 ppm. Measurement Range **Brand:** hm digital **Price:** āļŋ2967 **Availability:** ✅ In Stock ## Summary > 💧 Know your water, own your wellness — instantly! ## Quick Answers - **What is this?** HM Digital tds ez Meter, Purple, 0-9990 ppm. Measurement Range by hm digital - **How much does it cost?** āļŋ2967 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/48734853-hm-digital-tds-ez-meter-purple-0-9990-ppm-measurement) ## Best For - hm digital enthusiasts ## Why This Product - Trusted hm digital brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - â€Ē **Stay Powered Longer:** Impressive 1000-hour battery life with auto-off to maximize usage and conserve energy. - â€Ē **Built to Last & Impress:** Durable translucent blue housing combines style with rugged reliability. - â€Ē **Effortless Data Capture:** Hold function freezes readings for easy recording and analysis on the go. - â€Ē **Precision at Your Fingertips:** Advanced microprocessor tech delivers accurate TDS readings up to 9990 ppm. - â€Ē **Instant Water Quality Insight:** Quick, one-button measurement ideal for tap water, RO filters, hydroponics, and more. ## Overview The HM Digital TDS-EZ Meter is a sleek, durable, and highly accurate water quality tester with a broad 0-9990 ppm measurement range. Featuring advanced microprocessor technology, a large LCD screen, and a hold function, it offers professional-grade precision and convenience. Its long-lasting battery and auto-off function ensure reliability for everyday use in water filtration, hydroponics, aquariums, and more — making it the essential tool for anyone serious about water purity. ## Description Product Description: A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the TDS-EZ can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million). The lower the TDS level, the purer the water, with 0 ppm being pure H2O. The TDS-EZ is great for checking your tap water quality, or knowing when to change a filter. (The meter does not test for biological contaminants.) The TDS-EZ is a great tool for drinking water, water filtration and purification, hydroponics (test your nutrients), aquariums, RO/DI systems, pools and spas, and more. ## Features - Economy model that is ideal for end-users. Highly efficient and accurate due to its advanced microprocessor technology. - Hold Function: saves measurements for convenient reading and recording and battery life is approx. 1000 hours of usage and power source is 2 x 1.5V button cell batteries (included) (LR44 or equivalent) - Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Display: large and easy-to-read LCD screen. - Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image. Fun, translucent blue housing that's very strong and durable. - TDS-EZ meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. Includes a TDS chart sticker on the back of the meter that explains TDS values. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B002C0A7ZY | | Best Sellers Rank | 26,445 in Garden (See Top 100 in Garden) 8 in Water Garden & Pond Test Kits | | Brand Name | HM Digital | | Capacity | 9999 Picoliters | | Colour | Blue | | Country Of Origin | China | | Customer Reviews | 4.4 4.4 out of 5 stars (7,368) 4.4 out of 5 stars | | Global Trade Identification Number | 00891144000168 | | Included Components | meter | | Item Dimensions | 25 x 32 x 155 millimetres | | Item Type Name | meter | | Manufacturer | HM Digital, Inc. | | Manufacturer Part Number | TDS-EZ | | Material Type | Plastic | | Model Number | TDS-EZ | | Size | 0-9990 ppm. Measurement Range | | Unit Count | 1.0 count | | Upc | 712641079917 891144000168 | ## Product Details - **Brand:** HM Digital - **Capacity:** 9999 Picoliters - **Colour:** Blue - **Item dimensions L x W x H:** 25 x 32 x 155 millimetres - **Material:** Plastic ## Images ![HM Digital tds ez Meter, Purple, 0-9990 ppm. Measurement Range - Image 1](https://m.media-amazon.com/images/I/71Q4-uBMFRL.jpg) ![HM Digital tds ez Meter, Purple, 0-9990 ppm. Measurement Range - Image 2](https://m.media-amazon.com/images/I/71W5X9ZBc2L.jpg) ![HM Digital tds ez Meter, Purple, 0-9990 ppm. Measurement Range - Image 3](https://m.media-amazon.com/images/I/71lU655ilLL.jpg) ![HM Digital tds ez Meter, Purple, 0-9990 ppm. Measurement Range - Image 4](https://m.media-amazon.com/images/I/31xM9WNWqVL.jpg) ## Available Options This product comes in different **Colour Name** options. ## Questions & Answers **Q: How many times can the tester be used?** A: FROM HM DIGITAL: Unlimited. Eventually, you will need new batteries, but the TDS-EZ can be used an unlimited number of times. **Q: What temperature was this device calibrated at? I noticed that readings vary with temperature. How do I get a consistent reading?** A: FROM HM DIGITAL: The TDS-EZ was calibrated at 25 degrees Celsius (77F), but more importantly, the TDS-EZ is one of HM Digital's most basic meters and does not have Automatic Temperature Compensation (ATC). Therefore, since it does not have ATC, you will see discrepancies when testing hotter or colder from the baseline of 25C/77F.If your water is typically around this temperature, it won't be much of a difference, but if +/-10 degrees or more from 25C/77F, it's a good idea to get a meter with ATC, such as HM Digital's TDS-3, TDS-4, AP-1, COM-80 or COM-100. **Q: can the battery be replaced? if so, what battery does it take?** A: Yes, the batteries can be replaced. It takes 2 LR44G "button cell" batteries like the batteries that go in watches, ect. The unit has an auto shut-off so the batteries should last a good long time. **Q: Can this be used to check for collodial silver in the 10 ppm range in a solution of distilled water?** A: No it can't. It doesn't detect specific elements or chemicals. Though the way calcium, lead, and collodial silver may dissolve would effect the numerical value of TDS and if you knew that in 100 ml of 45 deg Celsius water would only hold X# ppm of an element you might be able to figure it out based on the numerical value shown. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Seems good *by on Reviewed in the United Kingdom 14 December 2025* Seems good for the price and I presume reasonably accurate - measured 180 ppm in my tap water, which is about what I expected for semi hard water and 15 for my new RO filter water. Useful to check if my RO filter is remaining effective (or not) over time.This ez version seems intended for retail customers and has a useful sticker on it indicating what different TDS levels mean. ### ⭐⭐⭐⭐⭐ Bought as a gift *by on Reviewed in the United Kingdom 16 January 2025* Bought for someone else but Im told its great and does what he wanted it for. ### ⭐⭐⭐⭐ This tests Total Disolved Solids, not organic matter ie. Minerals not sewage! *by on Reviewed in the United Kingdom 4 May 2023* Not really what I wanted. It does measure TDS but not organic matter, such as sewage! ## Frequently Bought Together - HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy,Purple - HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue - 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. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/48734853-hm-digital-tds-ez-meter-purple-0-9990-ppm-measurement](https://www.desertcart.co.th/products/48734853-hm-digital-tds-ez-meter-purple-0-9990-ppm-measurement) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-06-05*