--- product_id: 764689794 title: "HM Digital HM-DIGITAL-TDS-3 HM Digital TDS-3 Total Dissolved Solids Handheld Meter with Carrying Case" brand: "hm digital" price: "NZ$87" currency: NZD in_stock: true reviews_count: 5 category: "Hm Digital" url: https://www.desertcart.nz/products/764689794-hm-digital-hm-digital-tds-3-hm-digital-tds-3 store_origin: NZ region: New Zealand --- # Measurement range 0-9990 PPM Built-in digital thermometer Advanced microprocessor tech HM Digital HM-DIGITAL-TDS-3 HM Digital TDS-3 Total Dissolved Solids Handheld Meter with Carrying Case **Brand:** hm digital **Price:** NZ$87 **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of water quality—because your health deserves precision. ## Quick Answers - **What is this?** HM Digital HM-DIGITAL-TDS-3 HM Digital TDS-3 Total Dissolved Solids Handheld Meter with Carrying Case by hm digital - **How much does it cost?** NZ$87 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/764689794-hm-digital-hm-digital-tds-3-hm-digital-tds-3) ## 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 - • **Clear & Convenient:** Large LCD screen with hold function lets you save and review measurements with ease. - • **Calibrate Like a Pro:** Easily recalibrate with a mini screwdriver to maintain peak performance and accuracy. - • **Effortless Portability:** Compact handheld design with included carrying case and belt clip for on-the-go professionals. - • **Smart Power Management:** Auto-off after 10 minutes conserves battery life, keeping you ready when it matters. - • **Precision You Can Trust:** High-accuracy readings within ±2% ensure reliable water quality checks every time. ## Overview The HM Digital TDS-3 is a professional-grade handheld meter designed for precise measurement of total dissolved solids in water, featuring an advanced microprocessor, a wide 0-9990 PPM range, built-in digital thermometer, and user-friendly functions like hold and auto-off. It comes complete with batteries and a carrying case, making it an essential tool for water quality monitoring in commercial and personal settings. ## Description Features Ideal for commercial use. Includes a carrying case with belt clip. 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. 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. Built – in digital thermometer Display: Large and easy – to – read LCD screen. Our meters are calibrated with a 342 PPM NaCl solution. meters can be recalibrated with a mini screwdriver. Review: After a month’s use monitoring drinking water, I've found it accurate and consistent. The unit delivered came with batteries and a carrying case included. Also included was a note from the suppliers asking me to get in touch if I noticed any errors - nice touch. Some reviewers have noted continuing varying read outs. I've noticed something similar when used with hot water but didn't find this a problem as it was mostly used with room temp water. In my opinion, it's accurate to within plus/minus 2%. This is based on ongoing readings given on municipal water, distilled water and stored samples. Granted, these aren't 'standard' samples but over time these samples confirmed the unit's accuracy and repeatability, in my opinion. I bought it to use as a quick check on my Brita water filter's performance and this it did admirably. Review: Usei um medidor e constatei que a água do filtro tem a mesma qualidade da água da torneira, com o mesmo número de resíduos. Tudo foi instalado conforme o manual. O produto me ajudou a ver que fui enganada ## Features - 高精度 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000VTQM70 | | Additional Features | High Accuracy | | Age Range Description | Adult | | Amazon Bestseller | #170,892 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2,047 in Voltage Testers | | Brand Name | HM Digital | | Customer Reviews | 4.4 4.4 out of 5 stars (1,720) | | Global Trade Identification Number | 00826333000001 | | Item Weight | 0.2 Grams | | Model | TDS-3 | | Number of Batteries | 2 LR44 batteries required. (included) | | Outer Material | Plastic | | Part Number | TDS-3 | | Power Source | Battery Powered | | UPC | 891144000083 826333000001 | | Unit Count | 1.0 Count | ## Product Details - **Age Range (Description):** Adult - **Brand:** HM Digital - **Global Trade Identification Number:** 00826333000001 - **Number of Batteries:** 2 LR44 batteries required. (included) - **Outer Material:** Plastic - **Power Source:** Battery Powered - **Special Feature:** High Accuracy - **UPC:** 891144000083 826333000001 - **Unit Count:** 1.0 Count ## Images ![HM Digital HM-DIGITAL-TDS-3 HM Digital TDS-3 Total Dissolved Solids Handheld Meter with Carrying Case - Image 1](https://m.media-amazon.com/images/I/512msUopWxL.jpg) ![HM Digital HM-DIGITAL-TDS-3 HM Digital TDS-3 Total Dissolved Solids Handheld Meter with Carrying Case - Image 2](https://m.media-amazon.com/images/I/61HMBs6FSjL.jpg) ![HM Digital HM-DIGITAL-TDS-3 HM Digital TDS-3 Total Dissolved Solids Handheld Meter with Carrying Case - Image 3](https://m.media-amazon.com/images/I/61u+PIX2faL.jpg) ![HM Digital HM-DIGITAL-TDS-3 HM Digital TDS-3 Total Dissolved Solids Handheld Meter with Carrying Case - Image 4](https://m.media-amazon.com/images/I/61HLc3eAlpL.jpg) ![HM Digital HM-DIGITAL-TDS-3 HM Digital TDS-3 Total Dissolved Solids Handheld Meter with Carrying Case - Image 5](https://m.media-amazon.com/images/I/811R9g1lQSL.jpg) ## Questions & Answers **Q: Does this TDS compensate for differences in temperature like the HM Digital TDS-4?** A: Yes if it was a real HM TDS meter but it is not. It's a knock off. Go to manufacturer's webpage and find a dealer in your area and order it there if you want a real meter. I spoke to the manufacturer HM DIGITAL today and they said the photo of this product is an original, but the product they ship is NOT. The original real HM Digital TDS-3 have a printed instruction in black letters on the back of the meter that says "CALIBRATION" and has a screw to calibrate. The knock-off simply has a hole and no printed words about calibration on it. The original also has 5 bumps on each edge of the meter like the photo, but the one this seller ships does not. Lastly, the real HM TDS-3 will display "HM" on the screen when you turn it on and then will display 00, but when you first turn it on will display HM. **Q: Where is this item made?** A: This is a a knock-off. I spoke to the manufacturer HM DIGITAL today and they said the photo of this product is an original, but the product they ship is NOT. The original real HM Digital TDS-3 have a printed instruction in black letters on the back of the meter that says "CALIBRATION" and has a screw to calibrate. The knock-off simply has a hole and no printed words about calibration on it. The original also has 5 bumps on each edge of the meter like the photo, but the one this seller ships does not. Lastly, the real HM TDS-3 will display "HM" on the screen when you turn it on and then will display 00, but when you first turn it on will display HM. **Q: Does this teat for lead , mercury, cadmium and other metals? If so, does it tell you concentrations?** A: No, it does not test for any specific dissolved solid. It tells you the purity of the water only. In other words, how close is the water sample is to distilled water. **Q: The one I bought seems to work however it has no way to adjust it there is a hole in the back but no screw is it a imposter?** A: That's because it's a knock-off. I spoke to the manufacturer HM DIGITAL today and they said the photo of this product is an original, but the product they ship is NOT. The original real HM Digital TDS-3 have a printed instruction in black letters on the back of the meter that says "CALIBRATION" and has a screw to calibrate. The knock-off simply has a hole and no printed words about calibration on it. The original also has 5 bumps on each edge of the meter like the photo, but the one this seller ships does not. Lastly, the real HM TDS-3 will display "HM" on the screen when you turn it on and then will display 00, but when you first turn it on will display HM. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by T***K on June 19, 2021* After a month’s use monitoring drinking water, I've found it accurate and consistent. The unit delivered came with batteries and a carrying case included. Also included was a note from the suppliers asking me to get in touch if I noticed any errors - nice touch. Some reviewers have noted continuing varying read outs. I've noticed something similar when used with hot water but didn't find this a problem as it was mostly used with room temp water. In my opinion, it's accurate to within plus/minus 2%. This is based on ongoing readings given on municipal water, distilled water and stored samples. Granted, these aren't 'standard' samples but over time these samples confirmed the unit's accuracy and repeatability, in my opinion. I bought it to use as a quick check on my Brita water filter's performance and this it did admirably. ### ⭐⭐⭐⭐⭐ Review *by C***L on November 21, 2023* Usei um medidor e constatei que a água do filtro tem a mesma qualidade da água da torneira, com o mesmo número de resíduos. Tudo foi instalado conforme o manual. O produto me ajudou a ver que fui enganada ### ⭐ Review *by A***A on March 9, 2020* Purtroppo non ci sono istruzioni in italiano ## Frequently Bought Together - HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy - 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.nz/products/764689794-hm-digital-hm-digital-tds-3-hm-digital-tds-3](https://www.desertcart.nz/products/764689794-hm-digital-hm-digital-tds-3-hm-digital-tds-3) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-04-30*