--- 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: "€ 1.43" currency: EUR in_stock: false reviews_count: 2 url: https://www.desertcart.ie/products/79692729-hm-digital-tds-ez-water-quality-tds-tester-0-9990 store_origin: IE region: Ireland --- # 3% Accuracy 0-9990 ppm Range 1 ppm Resolution HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy **Brand:** hm digital **Price:** € 1.43 **Availability:** ❌ Out of Stock ## Summary > πŸ’§ Stay Ahead of the Curve with Crystal Clear Water Quality Insights! ## 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?** € 1.43 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/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:** Stand out with a fun, translucent blue housing that’s both strong and eye-catching. - β€’ **User-Friendly Design:** Enjoy a large, easy-to-read LCD screen for effortless monitoring. - β€’ **Precision Measurement:** Experience unparalleled accuracy with a 0-9990 ppm measurement range. - β€’ **Eco-Conscious Auto-Off:** Save battery life with an automatic shut-off feature after 10 minutes of inactivity. - β€’ **Convenient Hold Function:** Easily save and record your measurements with the handy hold function. ## Overview The HM Digital TDS-EZ Water Quality TDS Tester is an essential tool for anyone serious about water quality. With a measurement range of 0-9990 ppm and a resolution of 1 ppm, this tester ensures precise readings. Its user-friendly design features a large LCD screen and a hold function for easy recording. Plus, the eco-conscious auto-off feature conserves battery life, making it a smart choice for the environmentally aware consumer. Durable and stylish, this tester is perfect for both home and professional use. ## 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 | |---------------|-------| | 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 | | Model number | TDS-EZ | | Number of Memory Sticks | 1 | | Item Weight | 56.6 g | | Product Dimensions | 2.54 x 3.18 x 15.49 cm; 56.7 g | | Batteries | 2 LR44 batteries required. (included) | | Item model number | TDS-EZ | | Item Height | 6.1 Inches | | Item Width | 1.25 Inches | | Compatible Device | TDSEZ, TDS-EZ | | Average Battery Life (in hours) | 1000 Hours | | Are batteries included? | Yes | | Lithium Battery Packaging | Batteries packed with equipment | ## 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 J***D on 2 May 2019* Nice ### ⭐⭐⭐⭐⭐ Five Stars *by A***V on 16 November 2017* Good quality. ## 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.ie/products/79692729-hm-digital-tds-ez-water-quality-tds-tester-0-9990](https://www.desertcart.ie/products/79692729-hm-digital-tds-ez-water-quality-tds-tester-0-9990) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-04-22*