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HM DigitalTDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy

HM DigitalTDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy

Q: Does this TDS compensate for differences in temperature like the HM Digital TDS-4?

Yes if it was a real HM TDS meter but it is not. It's a knock off. Go to manufacturer's webpage and find a dealer in your area and order it there if you want a real meter. I spoke to the manufacturer HM DIGITAL today and they said the photo of this product is an original, but the product they ship is NOT. The original real HM Digital TDS-3 have a printed instruction in black letters on the back of the meter that says "CALIBRATION" and has a screw to calibrate. The knock-off simply has a hole and no printed words about calibration on it. The original also has 5 bumps on each edge of the meter like the photo, but the one this seller ships does not. Lastly, the real HM TDS-3 will display "HM" on the screen when you turn it on and then will display 00, but when you first turn it on will display HM.

Q: Where is this item made?

This is a a knock-off. I spoke to the manufacturer HM DIGITAL today and they said the photo of this product is an original, but the product they ship is NOT. The original real HM Digital TDS-3 have a printed instruction in black letters on the back of the meter that says "CALIBRATION" and has a screw to calibrate. The knock-off simply has a hole and no printed words about calibration on it. The original also has 5 bumps on each edge of the meter like the photo, but the one this seller ships does not. Lastly, the real HM TDS-3 will display "HM" on the screen when you turn it on and then will display 00, but when you first turn it on will display HM.

Q: Does this teat for lead , mercury, cadmium and other metals? If so, does it tell you concentrations?

No, it does not test for any specific dissolved solid. It tells you the purity of the water only. In other words, how close is the water sample is to distilled water.

Q: The one I bought seems to work however it has no way to adjust it there is a hole in the back but no screw is it a imposter?

That's because it's a knock-off. I spoke to the manufacturer HM DIGITAL today and they said the photo of this product is an original, but the product they ship is NOT. The original real HM Digital TDS-3 have a printed instruction in black letters on the back of the meter that says "CALIBRATION" and has a screw to calibrate. The knock-off simply has a hole and no printed words about calibration on it. The original also has 5 bumps on each edge of the meter like the photo, but the one this seller ships does not. Lastly, the real HM TDS-3 will display "HM" on the screen when you turn it on and then will display 00, but when you first turn it on will display HM.

4.6/5

Product ID: 3067453

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Details

Brand
HM Digital
Special Feature
High Accuracy
Color
Style 1
Age Range (Description)
Adult
Included Components
Carrying case
Outer Material
Metal

🎯±2% readout accuracy

📏0-9990 ppm range

🖥️Large LCD display

Description

💧 Measure purity like a pro — don’t let your water quality be a mystery!

SMART DATA CAPTURE - Hold function saves readings so you never miss a critical measurement during busy workflows.
BUILT FOR THE FIELD - Rugged handheld design with included carrying case and belt clip for on-the-go convenience.
DUAL FUNCTION DISPLAY - Integrated digital thermometer alongside TDS readings for comprehensive water quality insights.
TRUSTED BY INDUSTRY PROS - The world’s most popular handheld TDS meter, engineered with advanced microprocessor tech.
PRECISION AT YOUR FINGERTIPS - Instantly measure water purity with 1 ppm resolution for professional-grade accuracy.

The HM Digital TDS-3 is a compact, handheld meter designed for precise Total Dissolved Solids measurement from 0 to 9990 ppm with 1 ppm resolution and ±2% accuracy. Featuring a large LCD screen and built-in thermometer, it’s ideal for commercial and industrial water quality testing. Its rugged design includes a protective carrying case with belt clip and a hold function to save readings, making it the go-to tool for professionals who demand reliable, instant water purity data.

Specifications

Brand	HM Digital
Special Feature	High Accuracy
Color	Style 1
Age Range (Description)	Adult
Included Components	Carrying case
Outer Material	Metal
Specification Met	Tds
Display Type	LCD
Product Care Instructions	Wipe Clean
Unit Count	1.0 Count
Power Source	Battery Powered
Model Name	TDS-3
Number of Batteries	2 LR44 batteries required. (included)
Item Length	1 Inches
Upper Temperature Rating	9.99E+3 Degrees Celsius
Reusability	Single Use
Resolution	1 ppm
Style	Contemporary
Indoor/Outdoor Usage	Indoor
UPC	891144000083 826333000001
Global Trade Identification Number	00826333000001
Manufacturer	HM Digital
Part Number	TDS-3
Item Weight	0.007 ounces
Item model number	TDS-3
Batteries	2 LR44 batteries required. (included)
Is Discontinued By Manufacturer	No
Size	0 - 9990 ppm. TDS Range, 1 ppm Resolution, +/- 3% Readout Accuracy
Pattern	meter
Item Package Quantity	1
Number Of Pieces	10
Temperature Range	0/80 Degrees Celsius
Measurement Accuracy	1
Special Features	High Accuracy
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline
Average Battery Life	3 Hours

Have a Question? See What Others Asked

Does this TDS compensate for differences in temperature like the HM Digital TDS-4?

Where is this item made?

Does this teat for lead , mercury, cadmium and other metals? If so, does it tell you concentrations?

The one I bought seems to work however it has no way to adjust it there is a hole in the back but no screw is it a imposter?

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

View all Trustpilot reviews

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