---
product_id: 5343427
title: "HM Digital 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: "₩80834"
currency: KRW
in_stock: true
reviews_count: 13
category: "Hm Digital"
url: https://www.desertcart.kr/products/5343427-hm-digital-com-80-electrical-conductivity-ec-and-total-dissolved
store_origin: KR
region: South Korea
---

# 0-5000 ppm TDS range Water resistant design 0.5 sec fast response HM Digital 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:** ₩80834
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead in the nutrient game with precision that flows!

## Quick Answers

- **What is this?** HM Digital 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?** ₩80834 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/5343427-hm-digital-com-80-electrical-conductivity-ec-and-total-dissolved)

## 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

- • **Precision You Can Trust:** Measures EC & TDS with 2% accuracy for reliable nutrient and water quality testing.
- • **Built for Real-World Use:** Water resistant with auto-off, data-hold, and low battery indicators for hassle-free, durable performance.
- • **User-Friendly & Portable:** Compact, lightweight design with easy plug-and-play operation and a clear LCD display.
- • **Smart Temperature Compensation:** Automatic Temperature Compensation (ATC) ensures accurate readings regardless of water temperature.
- • **Versatile Multi-Scale Readings:** Four measurement scales (µS, mS, ppm, ppt) to cover all your hydroponic and water testing needs.

## Overview

The HM Digital COM-80 is a compact, battery-powered EC and TDS meter designed for professionals and enthusiasts in hydroponics, aquariums, pools, and water quality management. Featuring a broad 0-5000 ppm range, 2% accuracy, and automatic temperature compensation, it delivers fast, reliable readings on multiple scales. Its water-resistant build and smart features like auto-off and data-hold make it a durable, user-friendly tool for precise dissolved solids and conductivity measurement.

## 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.

Review: Easy to use. Reliable results - Great tool
Review: Killer little EC meter! - Works good for me. It has the 500 and the 700 scale reading but using it in EC works for me. Plug and play easy! Feels like it was made good and the reading feel correct. Since my other reader died I'm kind blindly trusting this this is right. Good price too

## 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) | Adult |
| Batteries | 3 LR44 batteries required. |
| Best Sellers Rank | #31,649 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Conductivity Meters & Accessories |
| Brand | HM Digital |
| Color | White |
| Date First Available | August 4, 2012 |
| Display Type | LCD |
| Global Trade Identification Number | 00891144000229 |
| Immersion Depth | 15.5 Centimeters |
| Included Components | Battery |
| Indoor/Outdoor Usage | Indoor |
| Is Discontinued By Manufacturer | No |
| Item Length | 6 Inches |
| Item Weight | 2.08 ounces |
| Item model number | EC/TDS HydroTester Series |
| Manufacturer | HM Digital |
| Model Name | EC/TDS HydroTester Series |
| Number of Batteries | 3 LR44 batteries required. |
| Outer Material | Plastic |
| Power Source | Battery Powered |
| Product Care Instructions | Wipe Clean |
| Response Time | 0.5 seconds |
| Reusability | Reusable |
| Special Feature | Auto-off function, data-hold function, and low-battery indicator |
| Style | Specialized Utilitarian Digital |
| UPC | 891144000229 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 80 Degrees Celsius |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** HM Digital
- **Color:** White
- **Display Type:** LCD
- **Included Components:** Battery
- **Outer Material:** Plastic
- **Power Source:** Battery Powered
- **Product Care Instructions:** Wipe Clean
- **Special Feature:** Auto-off function, data-hold function, and low-battery indicator
- **Unit Count:** 1.0 Count

## Images

![HM Digital 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)
![HM Digital 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)
![HM Digital 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)
![HM Digital 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)
![HM Digital 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to use. Reliable results
*by J***N on January 15, 2026*

Great tool

### ⭐⭐⭐⭐⭐ Killer little EC meter!
*by J***N on June 23, 2025*

Works good for me. It has the 500 and the 700 scale reading but using it in EC works for me. Plug and play easy! Feels like it was made good and the reading feel correct. Since my other reader died I'm kind blindly trusting this this is right. Good price too

### ⭐⭐⭐⭐ The one to get if you brew coffee at home or work
*by M***M on August 1, 2025*

High accuracy and fast reading TDS meter that supports multiple modes. I’m not an expert in water or chemistry but I purchased this at the suggestion of an online educator who does coffee and water chemistry videos. They suggested that this one was the one to get given that it has different modes that allow you to get more accurate readings than a lot of the single mode TDS meters on the market. I see it as a great value given the robust capabilities and ease of use. It has great build quality and I expect it to last a long time. My only wish is that it was easier to calibrate. It comes with calibration documentation but you need some highly specialized equipment to calibrate it. Fortunately, this isn’t necessary to do for most use cases.

## 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

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-28*