--- product_id: 79692729 title: "HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy" brand: "hm digital" price: "S$92" currency: SGD in_stock: true reviews_count: 7 url: https://www.desertcart.sg/products/79692729-hm-digital-tds-ez-water-quality-tds-tester-0-9990 store_origin: SG region: Singapore --- # 0-9990 ppm range 1 ppm resolution Auto-off after 10 min HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy **Brand:** hm digital **Price:** S$92 **Availability:** βœ… In Stock ## Summary > πŸ’§ Measure purity like a pro β€” because your water deserves precision. ## Quick Answers - **What is this?** HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy by hm digital - **How much does it cost?** S$92 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/79692729-hm-digital-tds-ez-water-quality-tds-tester-0-9990) ## 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 - β€’ **Durable & Stylish:** Translucent blue, rugged housing combines modern aesthetics with long-lasting strength. - β€’ **Smart Power Saving:** Auto-off feature conserves battery life, keeping your meter ready when you are. - β€’ **User-Friendly Display:** Large, easy-to-read LCD screen ensures quick, clear results every time. - β€’ **Effortless Data Capture:** Hold function freezes readings so you never miss a detail during testing. - β€’ **Precision at Your Fingertips:** Advanced microprocessor tech delivers Β±3% accuracy for reliable water quality insights. ## Overview The HM Digital TDS-EZ is a compact, highly accurate water quality tester measuring Total Dissolved Solids from 0 to 9990 ppm with 1 ppm resolution and Β±3% accuracy. Featuring a large LCD, hold function, and auto-off for battery efficiency, it’s perfect for professionals and enthusiasts monitoring tap water, filtration systems, hydroponics, and aquariums. Its durable translucent blue casing and easy recalibration make it a reliable, stylish tool for ensuring 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. - 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 | #232,602 in Home & Kitchen (See Top 100 in Home & Kitchen) #2,006 in Water Purifier Accessories | | Brand | HM Digital | | Colour | Purple | | Country Of Origin | USA | | Customer Reviews | 4.4 4.4 out of 5 stars (7,379) 4.4 out of 5 stars | | Enclosure Material | Metal | | Global Trade Identification Number | 00891144000168 | | Item Dimensions | 25 x 32 x 155 Millimeters | | Manufacturer | HM Digital, Inc. | | Manufacturer Part Number | TDS-EZ | | Manufacturer Warranty Description | Contact seller of record | | Model Number | TDS-EZ | | Outputcapacity | 9999 picoliters | | Size | 0-9990 ppm. Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy | | Unit Count | 1 Count | | Upc | 712641079917 891144000168 | ## Product Details - **Colour:** Purple - **Material:** Metal - **Capacity:** 9999 Picoliters - **Brand:** HM Digital - **Item dimensions L x W x H:** 25 x 32 x 155 Millimeters - **Item Weight:** 2 Ounces - **Global Trade Identification Number:** 00891144000168 - **Manufacturer:** HM Digital, Inc. - **Size:** 0-9990 ppm. Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy - **UPC:** 712641079917 891144000168 ## Images ![HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy - Image 1](https://m.media-amazon.com/images/I/51bkCzLQm9L.jpg) ![HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy - Image 2](https://m.media-amazon.com/images/I/31xM9WNWqVL.jpg) ## 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 ### ⭐⭐⭐⭐⭐ Nice product *by on Reviewed in India 2 May 2019* Nice ### ⭐⭐⭐⭐⭐ Five Stars *by on Reviewed in India 16 November 2017* Good quality. ### ⭐⭐⭐⭐⭐ SinoWare Probador digital de TDS, *by on Reviewed in Mexico 13 February 2024* ...La calidad del producto buena, bonito ...todo en general me gusto Gracias! ## 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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/79692729-hm-digital-tds-ez-water-quality-tds-tester-0-9990](https://www.desertcart.sg/products/79692729-hm-digital-tds-ez-water-quality-tds-tester-0-9990) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-07-25*