--- product_id: 72620744 title: "COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy" brand: "hm digital" price: "R1637" currency: ZAR in_stock: true category: "Hm Digital" url: https://www.desertcart.co.za/products/72620744-com-80-electrical-conductivity-ec-and-total-dissolved-solids-hydro store_origin: ZA region: South Africa --- # 0-9990 µS EC range 0-5000 ppm TDS precision Automatic Temperature Compensation COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy **Brand:** hm digital **Price:** R1637 **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of the curve with precision water testing in your pocket! ## Quick Answers - **What is this?** COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy by hm digital - **How much does it cost?** R1637 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/72620744-com-80-electrical-conductivity-ec-and-total-dissolved-solids-hydro) ## 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 - • **Compact & Portable:** Lightweight 59g tester fits perfectly in your toolkit or pocket for anytime testing. - • **Instant, Clear Digital Display:** High-resolution 1 ppm readout for quick, confident decisions on the go. - • **Versatile Multi-Scale Readings:** Four measurement scales (µS, mS, ppm, ppt) to cover all your water quality needs. - • **Built for Real-World Conditions:** Water-resistant design ensures durability in hydroponics, pools, and aquariums. - • **Precision that Powers Your Growth:** Measures EC and TDS with ±2% accuracy for reliable nutrient testing. ## Overview The HM Digital COM-80 is a compact, battery-powered EC and TDS meter offering precise water quality measurements with a 0-5000 ppm TDS range and ±2% accuracy. Featuring four measurement scales and automatic temperature compensation, it’s water-resistant and ideal for hydroponics, aquariums, pools, and commercial water systems. ## Description Product Description: NEW! The COM-80 is an economically priced, reliable EC/TDS meter (ppm pen / nutrient tester) that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Also great for commercial applications, such as boilers and cooling towers and filtration and purification systems. ## Features - Measures electrical conductivity (EC), total dissolved solids (TDS). Exellent for nutrient testing. - Four scales: EC: µS, mS; TDS: ppm, ppt - Automatic Temperature Compensation (ATC) - Water resistant ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B008SOPO10 | | Age Range Description | All Ages | | Battery Life | 2 years | | Best Sellers Rank | 60,129 in Garden ( See Top 100 in Garden ) 11 in Water Garden & Pond Test Kits | | Brand | HM Digital | | Colour | White | | Country Of Origin | China | | Customer Reviews | 4.4 4.4 out of 5 stars (753) | | Display Type | Digital | | Global Trade Identification Number | 00891144000229 | | Immersion Depth | 15.5 Centimetres | | Included Components | Protective cap, 3 x 1.5V button cell batteries (LR44 or equivalent) | | Indoor Outdoor Usage | Outdoor | | Inner Material | Plastic/Rubber | | Item Length | 15.3 Centimetres | | Item Weight | 0.13 Pounds | | Manufacturer | HM Digital | | Manufacturer Part Number | COM-80 | | Model Name | HydroTester | | Model Number | EC/TDS HydroTester Series | | Number of Batteries | 3 LR44 batteries required. | | Outer Material | Plastic or Rubber | | Power Source | Battery Powered | | Product Care Instructions | Wipe Clean | | Resolution | 1 µS/ppm; 0.1 mS | | Response Time | 0.5 seconds | | Reusability | Rechargeable | | Smart Home Compatibility | Not Smart Home Compatible | | Special Features | Waterproof | | Specification Met | 0-9990 µS; 0-5000 ppm; 0-9.9 mS; 0-5.0 ppt | | Style Name | Minimalist | | UPC | 891144000229 | | Unit Count | 1.0 count | | Upper Temperature Rating | 9990 Degrees Celsius | ## Product Details - **Age range (description):** All Ages - **Brand:** HM Digital - **Colour:** White - **Display type:** Digital - **Included components:** Protective cap, 3 x 1.5V button cell batteries (LR44 or equivalent) - **Outer material:** Plastic or Rubber - **Product care instructions:** Wipe Clean - **Special feature:** Waterproof - **Specification met:** 0-9990 µS; 0-5000 ppm; 0-9.9 mS; 0-5.0 ppt - **Unit count:** 1.0 count ## Images ![COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy - Image 1](https://m.media-amazon.com/images/I/61o4J+qE4wL.jpg) ![COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy - Image 2](https://m.media-amazon.com/images/I/51MH-iekPeL.jpg) ![COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy - Image 3](https://m.media-amazon.com/images/I/61pEVXW+pVL.jpg) ![COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy - Image 4](https://m.media-amazon.com/images/I/61IGgm-VN8L.jpg) ![COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy - Image 5](https://m.media-amazon.com/images/I/31qYfe-L8jL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: will this measure ammonia?** A: It will not measure ammonia. **Q: It serves to measure colloidal silver?** A: I Use It To Measure The Electrical Conductivity Of Water AndTo Determine The Parts Pert Million Of Any Particulants In A Solution, In My Case Water. **Q: Does it measure EC with a decimal point, i.e. 3.5?** A: Depends on scale used. 0 - 9999us scale (1.0 resolution) 0 - 9.9ms scale (0.1 resolution) **Q: does this measure ph, salt, chlorine levels?** A: No, this meter measures EC (electroconductivity) and TDS (total dissolved solids) on four scales: EC: µS, mS; TDS: ppm, ppt ## Frequently Bought Together - HM Digital COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy - HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue - HM Digital 1000ppm TDS Calibration Solution --- ## 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.co.za/products/72620744-com-80-electrical-conductivity-ec-and-total-dissolved-solids-hydro](https://www.desertcart.co.za/products/72620744-com-80-electrical-conductivity-ec-and-total-dissolved-solids-hydro) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-06-02*