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Item #:
223182228
HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter
88% of respondents would recommend this to a friend
Item #:
223182228
PYG 525707
Price Details
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*All items will import from US
In stock
Imported from USA store
QTY:
Order now and get it around Monday, September 28
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The COM-100 offers professional-level water quality testing at an unbeatable price.
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What Stands Out
Waterproof Design
The HMDCOM100 features a fully waterproof design, ensuring reliable performance in harsh environments, making it ideal for aquaculture, hydroponics, and water quality testing.
Dual Functionality
This meter measures both EC/TDS and temperature simultaneously, providing comprehensive water quality data at a glance, which streamlines the monitoring process for users.
User-Friendly Interface
Equipped with an easy-to-read display and simple controls, the HMDCOM100 allows users of all experience levels to efficiently monitor and manage water quality without hassle.
Product Details
| Additional Features | Auto-off function, data-hold function and low-battery indicator., Display: large and easy-to-read LCD screen includes simultaneous temperature reading., Factory Calibrated: The COM-100 meter is calibrated with a 1413 µS solution. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver. |
| Display Type | Digital |
| Power Source | Battery Powered |
| Number of Batteries | 1 A batteries required. |
| Upper Temperature Range | 130 °F |
| Response Time | 0.5 seconds |
| Reusability | Reusable |
| Immersion Depth | 1 meters |
| Indoor Outdoor Usage | Outdoor |
| Battery Life | 100 hours |
| Outer Material | Plastic |
| Product Care Instructions | Wipe Clean |
| Color | White/Purple |
| Style Name | Contemporary |
| Specification Met | UL |
| Brand Name | HM Digital |
| Age Range Description | Adult |
| Included Components | HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter |
| Model Name | COM-100 |
| Model | COM-100 |
| UPC | 095225177507 891144000007 |
| Global Trade Identification Number | 00891144000007 |
| Manufacturer | HM Digital |
| Item Weight | 120 g |
| Item Type Name | HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter |
| Part Number | COM-100 |
| Unit Count | 1 Count |
| Item Length | 8.9 inches (22.61 cm) |
| Brand | HM Digital |
| Special Feature | Auto-off function, data-hold function and low-battery indicator., Display: large and easy-to-read LCD screen includes simultaneous temperature reading., Factory Calibrated: The COM-100 meter is calibrated with a 1413 µS solution. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver. See more |
| Age Range (Description) | Adult |
What's in the box
HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter
Who Should Buy?
-
Hydroponic Growers
Ideal for hydroponic setups to monitor nutrient levels effectively, ensuring optimal plant growth and health.
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Aquarium Enthusiasts
Perfect for aquarium owners wanting to maintain proper water quality and monitor salinity levels for aquatic life.
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Laboratory Use
Useful for labs needing accurate readings of conductivity and temperature in various water samples for experiments.
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Casual Users
Not suited for casual home users who require minimal water testing or occasional monitoring without precise readings.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What features does the HM Digital HMDCOM100 Combo Meter offer?
Answer: The HM Digital HMDCOM100 Combo Meter integrates an electrical conductivity (EC), total dissolved solids (TDS), and temperature measurements in one device. This multifunctionality makes it ideal for aquariums, hydroponics, and water quality testing in various environments. The meter is lightweight, portable, and waterproof, enabling accurate readings in challenging conditions, ensuring you can monitor water quality effectively anywhere. -
Question:
How do I calibrate the HM Digital HMDCOM100 Combo Meter?
Answer: Calibrating the HM Digital HMDCOM100 is essential for precise readings. First, rinse the electrodes with distilled water, then immerse them in the calibration solution with a known value. Follow the instructional manual for specific calibration steps, usually involving pressing the calibration button until the display shows calibration mode. Regular calibration before use can improve accuracy for applications like aquaculture, gardening, or lab testing. -
Question:
What is the measurement range of the HM Digital HMDCOM100?
Answer: The HM Digital HMDCOM100 offers a measurement range of 0-9990 µS/cm for EC and 0-5000 ppm for TDS. These ranges are suitable for various applications, from monitoring drinking water quality to managing nutrient levels in hydroponics. With its broad range, the device is multifunctional, catering to diverse user needs such as agriculture, horticulture, and aquaculture. -
Question:
Is the HM Digital HMDCOM100 suitable for outdoor use?
Answer: Yes, the HM Digital HMDCOM100 is designed for both indoor and outdoor use. Its waterproof feature allows it to perform reliably in wet conditions, making it ideal for outdoor activities such as gardening, pond inspections, and irrigation testing. Whether you're monitoring water quality at a construction site or in your backyard, its durability ensures longevity and dependable performance. -
Question:
What units of measurement can the HM Digital HMDCOM100 display?
Answer: The HM Digital HMDCOM100 displays measurements in two key units: TDS (Total Dissolved Solids) in ppm and EC (Electrical Conductivity) in µS/cm. This dual display is crucial for users in fields such as hydroponics or aquaculture, where understanding both the TDS and conductivity levels helps manage nutrient solutions effectively, ensuring optimal growth conditions for plants or aquatic life. -
Question:
Can the HM Digital HMDCOM100 be used for saltwater applications?
Answer: Absolutely! The HM Digital HMDCOM100 is effective for both freshwater and saltwater applications. Its accurate readings are essential for aquarists monitoring marine tanks, where salinity and dissolved solids vary significantly. With detailed levels of TDS and conductivity, users can maintain proper water conditions, supporting the health and sustainability of fish and coral species. -
Question:
What type of batteries does the HM Digital HMDCOM100 require?
Answer: The HM Digital HMDCOM100 operates on a 9V battery, which is widely available. This allows for extended use without frequent replacements, which is beneficial for users conducting multiple tests in a day. Whether in a laboratory, nursery, or field work, having a reliable power source ensures consistent performance, making it a practical tool for continuous monitoring. -
Question:
How do I maintain the HM Digital HMDCOM100 for best performance?
Answer: To maintain the HM Digital HMDCOM100, regularly clean the sensor tips with distilled water to avoid residue buildup. Store the device in a protective case when not in use, and make sure to recalibrate periodically for accurate results. Proper care extends the life of the meter and ensures that it delivers reliable readings for applications such as aquaculture, horticulture, or hydroponics. -
Question:
What is the importance of measuring EC and TDS in water?
Answer: Measuring EC and TDS in water is essential for determining the quality and suitability of water for various applications. High TDS levels can indicate the presence of harmful contaminants, while measuring EC helps in assessing the nutrient strength in soils or water solutions, particularly in hydroponics. Understanding these parameters aids in maintaining optimal conditions for plant growth and aquatic life health. -
Question:
Where can I buy HM Digital HMDCOM100 Waterproof ECTDS And Amp Temperature Combo Meter in Paraguay?
Answer: You can purchase the HM Digital HMDCOM100 Waterproof ECTDS and Temperature Combo Meter from Ubuy, a reliable e-commerce platform that offers diverse products. Ubuy often provides various options and convenient purchasing solutions, making it an excellent choice for acquiring this meter in Paraguay.
HM Digital Meters Editorial Review
HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter is a vital tool for those who demand more than just basic water quality checks. This waterproof meter offers easy calibration, enabling users to maintain precise TDS readings, which is crucial for hydroponics, swimming pools, or spas. It features a large LCD display that shows temperature readings simultaneously and boasts convenient functions such as auto-off and data-hold. Users appreciate its lightweight design and accuracy to industry standards, with many noting that it has significantly improved their water management tasks, eliminating unnecessary water changes and chemical expenditures. Overall, the COM-100 gives confidence in controlling water chemistry effectively.
Customer Reviews & Ratings
189 customers ratings
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5 Star
69%
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4 Star
10%
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3 Star
4%
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2 Star
5%
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1 Star
12%
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Pros
- Waterproof design for durability in various settings
- Accurate readings ensure effective water management
- Easy calibration process for user convenience
- Lightweight and portable for easy storage
- Large LCD display for readability
Cons
- User instructions could be clearer for beginners
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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Important information
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PYG 525707
Order now and get it around Monday, September 28
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Features & Benefits
- Waterproof design (IP67 rating) for durability.
- Measures EC, TDS, and temperature with four scales.
- Ideal for diverse applications like aquaculture and hydroponics.
- Features three nonlinear EC to TDS conversion factors.
- High measurement range for accuracy and versatility.
- Professional quality at an affordable price point.
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