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HM Digital, Inc.

HM Digital Pocket-Sized TDS Meter w/ Thermometer

HB00045

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Pocket Sized TDS Meter w/ digital thermometer in aquarium-specific packaging.

The world’s smallest and lightest TDS meter also comes with a built-in digital thermometer. It is a true pocket size meter, comfortably fitting into a shirt pocket without adding bulk. The TDS-4TM-A comes in an aquarium-specific retail-ready packaging.

Features
  • Includes an internal digital thermometer (celsius).
  • The smallest and lightest TDS meter available on the market.
  • Hold Function - Saves measurements for convenient reading and recording.
  • Auto-off function - Turns off meter after 10 minutes of non-use to conserve batteries.
  • Dual Range - Measures from 0 - 999 ppm, with a resolution of 1ppm. From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking 'x10' image.
  • Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.
  • Recommended for aquariums & aquaculture

Manufacturer Info

HM Digital, Inc.
Established in 1987, HM Digital, Inc. (formerly known as Heemang Electronics) is an original equipment manufacturer (OEM) that has been recognized worldwide for providing the best values in water testing instrumentation, especially the increasingly popular TDS meter.

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9 Questions
Displaying questions 1-9
 
Q
Which end goes into the water for testing? Is it the end where the cap comes off I'm assumimg?
Asked : Jul 06, 2018
By : Janie
Answer Question
 
 
 
A
The end where the cap comes off goes in first.
Answered : Feb 10, 2019
By : Gianpiero Volpe, Eastpointe, MI
 
 
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Overall, others give this:

  • 4.6

17 Reviewers (94%) would recommend this

Overall Rating:

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5  Star
 12
4  Star
 4
3  Star
 0
2  Star
 1
1  Star
 0
 
5
5.0
TDS Meter

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PROS
Easy to use
CONS
None
REVIEW
Product was very easy to use.
  • 1
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5
5.0
Works like a dream

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PROS
Great device for price range
CONS
Accurate dat a isn't available right away
REVIEW
This thing is great it reads accurately but it may take a few seconds to get a proper read out
  • 1
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4
4.0
Does the job

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REVIEW
Not much to review four stars out of five just because it Celsius not Fahrenheit be nice if you could switch back-and-forth will besides that works as well is it supposed to come calibrated one day delivery as usual as well good product.
  • 1
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5
5.0
Accurate

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REVIEW
I tested this device against 2 other borrowed devices and it is precise. I wish the display screen was a bit bigger, but this is not a show stopper.
  • 1
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4
4.0
TDS Meter

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REVIEW
I wish that it read Fahrenheit , I do not like having to do the math .
  • 1
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5
5.0
Temp is Celsius ONLY

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REVIEW
The unit only reads temp. in Celsius not Fahrenheit. Not a big deal for me but can be for others. Apart from that, scary when you test your "filtered" drinking water vs. RO/DI Water.
  • 1
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5
5.0
Quality and Precision

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REVIEW
Just started testing my RO/DI water and will tell me exact ppm. Very well built piece and will last! If you want to make sure your RO/DI system is doing its job, get this TDS Meter!
  • 1
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Overall, others give this:

  • 4.6

17 Reviewers (94%) would recommend this

Overall Rating:

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5  Star
 12
4  Star
 4
3  Star
 0
2  Star
 1
1  Star
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