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The M24 Professional Electronic Gold Tester from Mizar is one of the most advanced in the world. It precisely determines gold Karat values equal to or greater than 9K, 10K, 12K, 14K, 16K, 18K, 20K, 22K, and 24K in Yellow, White, Red, and Green gold.
It is easy to use, with results in as little as 2 seconds, operates on an included 9 Volt alkaline battery, and comes with a two year warranty.
|To use the tester, first clean a testing point of the item with the included Gray Eraser to remove any oxidation.|
|Attach the Alligator clip to a different area of the Test Gold.|
|Press either the Test Yellow Gold or the Test White Gold button to match the type of gold that you are testing - a Karat value lights up.|
|Within 2 seconds, add 3 drops of Test Solution into the Test Well at the lower right corner of the instrument (where the ring is located in the photo).|
|After the Karat value light goes out (within 1 second), immerse enough of the Test Gold into the liquid to start the "Testing" light.|
|Hold the Test Gold in the immersion liquid until the Testing light goes off, about 2 to 15 seconds, depending on the Karat value of the Test Gold.|
|Read the LED display that lights up to discover the Karat value of your item.|
|Non-destructive testing - no fire assay method needed|
|Distinguishes Gold Wash and Flash from Solid Gold|
|Can distinguish non-Gold and Gold Plate from Solid Gold|
|Tests and identifies Platinum - indicated when carat value is 22K or higher, and gold color is white, not yellow|
|M24 Electronic Gold Tester|
|Wire Jumper with Alligator Clip|
|Testing Solution (No. 1995)|
|Testing Range||9, 10, 12, 14, 16, 18, 20, 22, and 24k; NOT GOLD, PLATINUM|
|Gold Colors tested||Yellow, Red, Green, and White gold|
|Test Times||2 seconds from 9-14k, 2-25 seconds from 16-24k|
|Delay before test begins||12 seconds|
|Display time||12 seconds|
|Automatic Shutoff||After each test|
By lighting ON the corresponding LED
One standard 9-volt alkaline battery (included)
|Operating Temperature||65 to 90 deg. F (19 to 32 deg. C)|
|8 oz. with battery|
|Unit Dimensions||6.3" x 4.0" x 1.5"|
The M-24 typically ships within 1 business day.
Because I had most of the jewelry that I tested - "hallmarked" with 10 kt or 14 kt etc, it was very close and accurate. I have a hard time believing that after each test, I have to stop and clean the pot out, scrub it down to either get a repeat test or to use it on another quickly switched out ring.
I also had trouble testing Canadian .9999 gold coins and getting them verified as 24 kt ( usually showed as 22 kt). Dave Merrill on Jan 12th 2021
I purchased this for my wife for Christmas. She just loves it!
Easy to use with great results. Roy on Dec 30th 2016