---
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: "222 zł"
currency: PLN
in_stock: true
reviews_count: 13
category: "Hm Digital"
url: https://www.desertcart.pl/products/5343427-hm-digital-com-80-electrical-conductivity-ec-and-total-dissolved
store_origin: PL
region: Poland
---

# 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:** 222 zł
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead in purity testing with precision that professionals trust!

## 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?** 222 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/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

- • **Multi-Scale Versatility:** Four measurement scales (µS, mS, ppm, ppt) adapt seamlessly to any testing need.
- • **Built for Real-World Use:** Water resistant and durable with auto-off and data-hold functions for effortless operation.
- • **Trusted by Pros & Hobbyists:** Top-rated (#3 in Conductivity Meters) with 4.5-star reviews for consistent, plug-and-play reliability.
- • **Precision at Your Fingertips:** 1 ppm resolution with ±2% accuracy ensures lab-grade readings every time.
- • **Smart Temperature Compensation:** Automatic Temperature Compensation (ATC) guarantees reliable results regardless of water temp.

## Overview

The HM Digital COM-80 is a compact, battery-powered EC and TDS meter offering a wide 0-5000 ppm range and 1 ppm resolution. Featuring four measurement scales and automatic temperature compensation, it delivers fast (0.5 sec) and accurate (±2%) readings. Water resistant and user-friendly, it’s ideal for hydroponics, aquariums, pools, and industrial water quality monitoring.

## 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: Works well, quick delivery. Glad I followed The Coffee Chronicler's suggestion. - Seems to work as advertised. Very fast readings, simple to use. Good purchase. The only thing I wish were different is my water. My water is further out of my target zone than I hoped! Good tool, this meter. A tool I need as I work to improve my water chemistry for coffee brewing.
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 |
| Additional Features | Auto-off function, data-hold function, and low-battery indicator |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Battery Life | 2 years |
| Best Sellers Rank | #18,846 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Conductivity Meters & Accessories |
| Brand | HM Digital |
| Brand Name | HM Digital |
| Color | White |
| Customer Reviews | 4.5 out of 5 stars 776 Reviews |
| Display Type | LCD |
| Global Trade Identification Number | 00891144000229 |
| Immersion Depth | 15.5 Centimeters |
| Included Components | Battery |
| Indoor Outdoor Usage | Indoor |
| Inner Material | Plastic/Rubber |
| Item Length | 6 Inches |
| Item Weight | 0.13 Pounds |
| Manufacturer | HM Digital |
| Model | EC/TDS HydroTester Series |
| Model Name | EC/TDS HydroTester Series |
| Number of Batteries | 3 LR44 batteries required. |
| Outer Material | Plastic |
| Part Number | COM-80 |
| Power Source | Battery Powered |
| Product Care Instructions | Wipe Clean |
| Resolution | 1 µS/ppm; 0.1 mS |
| Response Time | 0.5 seconds |
| Reusability | Reusable |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Feature | Auto-off function, data-hold function, and low-battery indicator |
| Style Name | Minimalist |
| UPC | 891144000229 |
| Unit Count | 1.0 Count |
| Upper Temperature Range | 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)

## 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

### ⭐⭐⭐⭐⭐ Works well, quick delivery. Glad I followed The Coffee Chronicler's suggestion.
*by A***H on February 11, 2026*

Seems to work as advertised. Very fast readings, simple to use. Good purchase. The only thing I wish were different is my water. My water is further out of my target zone than I hoped! Good tool, this meter. A tool I need as I work to improve my water chemistry for coffee brewing.

### ⭐⭐⭐⭐⭐ 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

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

Great tool

## 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 Poland*
*Store origin: PL*
*Last updated: 2026-05-21*