Thursday, 14 January 2016

Check HM Digital AP-2 AquaPro Water Quality Electrical Conductivity Tester, 0-9999 µS Range, 1 µS Resolution, +/- 2% Readout Accuracy Best

Compare HM Digital AP-2 AquaPro Water Quality Electrical Conductivity Tester, 0-9999 µS Range, 1 µS Resolution, +/- 2% Readout Accuracy with HM Digital items product

List Price: $42.95
Price: $23.41 Details
You save: $19.54

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This IS a conductivity meter, but ...
An earlier comment suggested this was in fact a PPM meter and I can see why. Most nutrient manufacturers make EC suggestions based on millisiemen measurements, ie. 0.8 - 1.2 for seedlings, etc. This unit actually delivers the EC reading in microsiemens, ie. 800 - 1,200 for seedlings, which looks very similar to a PPM reading but it's not. If you use this under the impression it's giving you PPM numbers you are gonna be way off. The good part, micro's convert to milli's very simply. A reading on this unit of say 1,500, for example would be a standard EC reading of 1.5. A 1,250 on this unit is standard EC of 1.25 (the reading divided by 1,000).

It works great, gives the temp in C or F and came very quickly. I deducted the one star because there was no written explanation of the microsiemen vs millisiemen included with the item - which cost me an hour of research to discover. Also, the readout is smaller than I had hoped.

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Product Description: An EC meter (aka EC pen or conductivity tester) is an inexpensive and convenient digital tool to instantly check your overall water quality. EC = Electrical Conductivity, which the water's ability to conduct electricity. With the push of a button, the AP-2 can tell you your overall water purity level, which will be displayed on the screen in µS (micro-Siemens). The lower the EC level, the purer the water, with 0 µS being pure H2O. The AP-2 is a great tool for water filtration and purification systems, hydroponics (test your nutrients), colloidal silver, boilers and cooling towers, and more.
Great product
Great little ppm/ec meter. High quality construction and easy to read screen. No adjustment screws to mess with. Auto temperature compensating, gives you a temp read out as well so doubles as a thermometer. I have been using it to measure nutrient levels for a hydroponics system and its been working great, much better than guessing lol.
HM Digital AP-2 EC Pen
Works great. It doesn't read in ppm but it is very accurate. I've been testing it every so often with a very expensive EC meter and its been spot on

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