--- product_id: 3067453 title: "HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy" brand: "hm digital" price: "SAR 89" currency: SAR in_stock: true reviews_count: 13 category: "Hm Digital" url: https://www.desertcart.com.sa/products/3067453-hm-digital-tds-3-handheld-tds-meter-with-carrying-case store_origin: SA region: Saudi Arabia --- # ±2% accuracy 0-9990 ppm range Built-in digital thermometer HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy **Brand:** hm digital **Price:** SAR 89 **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of water quality—because pure is the new power move! ## Quick Answers - **What is this?** HM Digital 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?** SAR 89 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/3067453-hm-digital-tds-3-handheld-tds-meter-with-carrying-case) ## 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 - • **Multi-Use Mastery:** Ideal for hydroponics, RO systems, aquariums, and commercial water quality checks. - • **Smart Power Management:** Auto-off after 10 minutes conserves battery life for uninterrupted use. - • **Data Hold Functionality:** Lock readings instantly to record and analyze without missing a beat. - • **Portable Professionalism:** Compact design with protective carrying case and belt clip for on-the-go testing. - • **Precision at Your Fingertips:** Instantly measure water purity with 1 ppm resolution for pinpoint accuracy. ## Overview The HM Digital TDS-3 is a top-rated handheld meter delivering precise Total Dissolved Solids readings from 0 to 9990 ppm with ±2% accuracy. Featuring a built-in digital thermometer, auto-off power saving, and a convenient hold function, it’s the go-to tool for professionals managing water purity in hydroponics, filtration, and industrial applications. Compact and rugged, it comes with a protective carrying case and belt clip, making it the ultimate portable water quality tester. ## 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: Great TDS Meter for Hydroponics – Easy to Use & Accurate! - I’ve been using the HM Digital TDS-3 for my hydroponic system, and it’s been a game-changer. If you’re serious about growing healthy plants, keeping track of your nutrient levels is crucial, and this little device makes it incredibly easy. What I Like: ✅ Accurate & Reliable – The readings are consistent, and the 0–9990 ppm range covers all my needs. I can easily check if my nutrient solution is too strong or too weak. ✅ Temperature Compensation (ATC) – I don’t have to worry about temperature affecting the accuracy. The meter adjusts automatically. ✅ Super Easy to Use – Just dip it in, wait a couple of seconds, and get an instant reading. The hold function is great for locking the number so I can check after pulling my hand out of my reservoir. ✅ Compact & Battery-Saving – It’s small, comes with a protective case, and has an auto shut-off to save battery life. A Couple of Things to Keep in Mind: ❌ Not Waterproof – Be careful not to drop it in water. I make sure only the probes are submerged. ❌ Doesn’t Measure pH – This is strictly for TDS and temperature, so you’ll need a separate pH meter. Final Thoughts: For the price, this TDS meter is absolutely worth it. It gives me quick, accurate readings and helps me dial in the perfect nutrient levels for my plants. If you’re into hydroponics, aquaponics, or even just checking your water quality, I highly recommend it! Review: Worth the money - I found this meter easy to use and giving me valuable information ## Features - plastic - Imported - 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 | #2,679 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 1,847 Reviews | | Display Type | LCD | | Global Trade Identification Number | 00826333000001 | | Included Components | Storage Case | | Indoor Outdoor Usage | Indoor | | Item Length | 1 inches | | Item Weight | 0.2 g | | 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 | | Special Feature | High Accuracy | | Style Name | Contemporary | | UPC | 891144000083 826333000001 | | Unit Count | 1 Count | | Upper Temperature Range | 50 °C | ## Product Details - **Age Range (Description):** Adult - **Brand:** HM Digital - **Color:** Style 1 - **Display Type:** LCD - **Included Components:** Storage Case - **Outer Material:** Metal - **Power Source:** Battery Powered - **Product Care Instructions:** Wipe Clean - **Special Feature:** High Accuracy - **Unit Count:** 1 Count ## Images ![HM Digital 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 ### ⭐⭐⭐⭐⭐ Great TDS Meter for Hydroponics – Easy to Use & Accurate! *by M***E on March 5, 2025* I’ve been using the HM Digital TDS-3 for my hydroponic system, and it’s been a game-changer. If you’re serious about growing healthy plants, keeping track of your nutrient levels is crucial, and this little device makes it incredibly easy. What I Like: ✅ Accurate & Reliable – The readings are consistent, and the 0–9990 ppm range covers all my needs. I can easily check if my nutrient solution is too strong or too weak. ✅ Temperature Compensation (ATC) – I don’t have to worry about temperature affecting the accuracy. The meter adjusts automatically. ✅ Super Easy to Use – Just dip it in, wait a couple of seconds, and get an instant reading. The hold function is great for locking the number so I can check after pulling my hand out of my reservoir. ✅ Compact & Battery-Saving – It’s small, comes with a protective case, and has an auto shut-off to save battery life. A Couple of Things to Keep in Mind: ❌ Not Waterproof – Be careful not to drop it in water. I make sure only the probes are submerged. ❌ Doesn’t Measure pH – This is strictly for TDS and temperature, so you’ll need a separate pH meter. Final Thoughts: For the price, this TDS meter is absolutely worth it. It gives me quick, accurate readings and helps me dial in the perfect nutrient levels for my plants. If you’re into hydroponics, aquaponics, or even just checking your water quality, I highly recommend it! ### ⭐⭐⭐⭐⭐ Worth the money *by M***Y on August 9, 2026* I found this meter easy to use and giving me valuable information ### ⭐⭐⭐⭐⭐ Great TDS Meter *by S***N on June 26, 2026* Very accurate TDS Meter that includes organic detection. Much better than the $7-10 range TDS Meters. ## 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.com.sa/products/3067453-hm-digital-tds-3-handheld-tds-meter-with-carrying-case](https://www.desertcart.com.sa/products/3067453-hm-digital-tds-3-handheld-tds-meter-with-carrying-case) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-09-06*