Can this unit be used to test PH?

FROM HM DIGITAL: The COM-100 is NOT a pH meter. It measures EC (electrical conductivity), TDS (total dissolved solids) and temperature. For pH, please purchase HM Digital's PH-200. For more information, please visit www.tdsmeter.com

My meter want read over 999 or am I looking at the wrong ppm?

Select 442 scale. Your meter will read more than 999 ppm.

Any trouble measuring in mS?

FROM HM-DIGITAL: The COM-100 is a professional waterproof EC/TDS meter that has three EC-TDS conversion factors and selectable modes allowing you to measure in the µs, mS, ppm and ppt scales. For more information, please visit, www.tdsmeter.com/products/com100.html

Isn't one supposed to use calibrating and cleaning solution with this?

I clean mine with a wet Q-tip. There is a TDS calibration solution I use when I recalibrate every month.

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HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter

Product ID: 4233698

Details

Age Range (Description)
Adult
Brand
HM Digital
Color
White/Purple
Display Type
Digital
Included Components
HM Digital And
Outer Material
Plastic

💧Measures EC, TDS & Temp

⏱️0.5s Fast Response Time

🛡️IP67 Waterproof Housing

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Description

💧 Stay ahead in water quality testing with precision and durability you can trust!

LONG LASTING POWER - Up to 100 hours of battery life with auto-off and low-battery indicator for uninterrupted, hassle-free testing.
ALL WEATHER DURABILITY - IP67-rated waterproof design ensures reliable performance indoors or outdoors, rain or shine.
USER FRIENDLY INTERFACE - Large, easy-to-read LCD with simultaneous temperature display and digital push-button calibration—no screwdriver needed.
CUSTOMIZABLE CALIBRATION - Three nonlinear EC-to-TDS conversion factors (KCl, 442TM, NaCl) let you tailor readings to your specific application.
TRIPLE PARAMETER PRECISION - Simultaneously measures electrical conductivity, total dissolved solids, and temperature for comprehensive water quality insights.

The HM Digital HMDCOM100 is a professional-grade, waterproof EC/TDS/temperature combo meter designed for versatile water quality testing across industries like aquaculture, hydroponics, and environmental monitoring. Featuring fast 0.5-second response, customizable calibration, and a rugged IP67 housing, it delivers reliable, accurate readings with a user-friendly digital interface and up to 100 hours of battery life.

Specifications

ASIN	B0045LQFTK
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.
Age Range Description	Adult
Battery Life	100 Hours
Best Sellers Rank	#47,492 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Conductivity Meters & Accessories #387 in Lab Meters
Brand Name	HM Digital
Color	White/Purple
Customer Reviews	4.1 4.1 out of 5 stars (189)
Display Type	Digital
Global Trade Identification Number	00891144000007
Immersion Depth	1 Meters
Included Components	HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter
Indoor Outdoor Usage	Outdoor
Item Length	8.9 Inches
Item Type Name	HM Digital HMDCOM100 Waterproof EC/TDS And Amp Temperature Combo Meter
Item Weight	120 Grams
Manufacturer	HM Digital
Model	COM-100
Model Name	COM-100
Number of Batteries	1 A batteries required.
Outer Material	Plastic
Part Number	COM-100
Power Source	Battery Powered
Product Care Instructions	Wipe Clean
Response Time	0.5 seconds
Reusability	Reusable
Smart Home Compatibility	Not Smart Home Compatible
Specification Met	UL
Style Name	Contemporary
UPC	095225177507 891144000007
Unit Count	1.0 Count
Upper Temperature Range	130 Degrees Fahrenheit
Warranty Description	Limited

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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75960CFA

Duties & taxes included

In stock

Sold byAmazon Cote D' IvoireDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cote D' Ivoire.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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