--- product_id: 3067453 title: "TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy" brand: "hm digital" price: "€ 27.28" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.it/products/3067453-tds-3-handheld-tds-meter-with-carrying-case-0-9990 store_origin: IT region: Italy --- # Β±2% accuracy 0-9990 ppm range Large LCD display TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy **Brand:** hm digital **Price:** € 27.28 **Availability:** βœ… In Stock ## Summary > πŸ’§ Measure purity like a pro β€” don’t let your water quality slip under the radar! ## Quick Answers - **What is this?** TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy by hm digital - **How much does it cost?** € 27.28 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/3067453-tds-3-handheld-tds-meter-with-carrying-case-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€’ **Built for the Field:** Rugged design with included carrying case and belt clip for on-the-go convenience. - β€’ **Smart Data Handling:** Hold function saves readings for easy recording and analysis anytime, anywhere. - β€’ **Dual-Function Display:** Integrated digital thermometer alongside TDS measurement for comprehensive water quality insights. - β€’ **Trusted Industry Standard:** The world’s most popular handheld TDS meter, favored by commercial and industrial pros. - β€’ **Precision at Your Fingertips:** Instantly measure water purity with 1 ppm resolution for professional-grade accuracy. ## Overview The HM Digital TDS-3 is a handheld Total Dissolved Solids meter offering a wide 0-9990 ppm measurement range with 1 ppm resolution and Β±2% accuracy. Featuring a large LCD screen and built-in digital thermometer, it’s designed for commercial and industrial use. Its rugged build includes a protective carrying case with belt clip and a hold function to save readings, making it the go-to tool for professionals monitoring water purity in filtration, hydroponics, aquariums, and more. ## Description Product 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-3 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-3 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-3 is a great tool for drinking water, water filtration and purification, colloidal silver, hydroponics (test your nutrients), aquariums, RO/DI systems, pools and spas, commercial and industrial applications and more. The TDS-3 is a rugged model that includes a protective carrying case. This is the world's most popular handheld TDS meter for industry professionals. From the Manufacturer Ideal for commercial use. Review: Perfect tester - I bought the iSpring tester first because it's a known brand. However it was defective when opened the box. Ordered this one instead, it's working as a charm and build quality also exceeded the iSpring by a mile. I recommend this product to anyone who's looking for a water tester affordable and accurate. Review: Good, simple, efficient! - Surprisingly helpful and easy to use! We just care about PPM (aka TDS) related to the Reverse Osmosis (RO) filter system we just installed, and this little guy does the trick. Inexpensive and working great for us for 2 weeks now! ## 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 - Built-in digital thermometer ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000VTQM70 | | Additional Features | High Accuracy | | Age Range (Description) | Adult | | Age Range Description | Adult | | Battery Life | 3 Hours | | Best Sellers Rank | #2,316 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Conductivity Meters & Accessories | | Brand | HM Digital | | Brand Name | HM Digital | | Color | Style 1 | | Customer Reviews | 4.6 out of 5 stars 1,751 Reviews | | Display Type | LCD | | Global Trade Identification Number | 00826333000001 | | Included Components | Carrying case | | Indoor Outdoor Usage | Indoor | | Item Length | 1 Inches | | Item Weight | 0.2 Grams | | Manufacturer | HM Digital | | Model | TDS-3 | | Model Name | TDS-3 | | Number of Batteries | 2 LR44 batteries required. (included) | | Outer Material | Metal | | Part Number | TDS-3 | | Power Source | Battery Powered | | Product Care Instructions | Wipe Clean | | Resolution | 1 ppm | | Reusability | Single Use | | Smart Home Compatibility | Not Smart Home Compatible | | Special Feature | High Accuracy | | Style Name | Contemporary | | UPC | 891144000083 826333000001 | | Unit Count | 1.0 Count | | Upper Temperature Range | 50 Degrees Celsius | ## Product Details - **Age Range (Description):** Adult - **Brand:** HM Digital - **Color:** Style 1 - **Display Type:** LCD - **Included Components:** Carrying case - **Outer Material:** Metal - **Power Source:** Battery Powered - **Product Care Instructions:** Wipe Clean - **Special Feature:** High Accuracy - **Unit Count:** 1.0 Count ## Images ![TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy - Image 1](https://m.media-amazon.com/images/I/512msUopWxL.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 ### ⭐⭐⭐⭐⭐ Perfect tester *by J***Y on February 27, 2026* I bought the iSpring tester first because it's a known brand. However it was defective when opened the box. Ordered this one instead, it's working as a charm and build quality also exceeded the iSpring by a mile. I recommend this product to anyone who's looking for a water tester affordable and accurate. ### ⭐⭐⭐⭐⭐ Good, simple, efficient! *by D***S on February 17, 2026* Surprisingly helpful and easy to use! We just care about PPM (aka TDS) related to the Reverse Osmosis (RO) filter system we just installed, and this little guy does the trick. Inexpensive and working great for us for 2 weeks now! ### ⭐⭐⭐⭐⭐ Cheap but worksahic *by J***N on February 27, 2026* This thing is so cool! It's so cheap compared to the alternatives and it is accurate upon arrival. I use it like a lab master and despite all the rough use it's still working. ## 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? - 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.it/products/3067453-tds-3-handheld-tds-meter-with-carrying-case-0-9990](https://www.desertcart.it/products/3067453-tds-3-handheld-tds-meter-with-carrying-case-0-9990) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-04-23*