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Gem & precious metal testers, since 1986

KEE electronic gold tester (model M-509GM)
KEE electronic gold tester (model M-509GM)
KEE electronic gold tester (model M-509GM)
KEE electronic gold tester (model M-509GM)
KEE electronic gold tester (model M-509GM)
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KEE electronic gold tester (model M-509GM)

Vendor

Ref: KEE

Regular price
£349.00
Sale price
£349.00
Regular price
Unit price
per 
inclusive of VAT. Shipping calculated at checkout.

Calibration samples for electronic gold testers

Official hallmark charts (latest, 2020 edition)

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Summary

We are a UK company offering fast delivery and easy telephone support.

I am wary of recommending new electronic gold testers, having tried a few that looked promising but turned out to be unreliable - the KEE is a good one! See more details and a review.

Making it with a simple analogue meter seems to have solved the problems found with 'computerised' electronic gold testers. This is definitely the most reliable electronic tester I have seen.

The price does not include a sample of 18ct and 22ct.  If you deal in jewellery you will have these - if not, you will need the 18ct sample for testing general jewellery; plus the 22ct sample if you want to test above 18ct accurately.

Detail

  • Size 90 X 170 X 50mm (3.5 X 7 X 2 inches)
  • No acids involved, the probe contains a harmless salt solution.
  • Tests gold from 8ct to 2ct (the scale is marked "K" instead of "ct" because it's American)
  • The pen probe provides up to 3000 tests.
  • Simple analogue meter, good reliability
  • Simply touch pen probe to the item, result is shown in 2 or 3 seconds, very fast
  • Includes extra contact leads for large items that will not fit on the test-plate.
  • Easy calibration with a sample of 18ct (+ a sample of 22ct gold if you want to test above 18ct accurately) - not included in the price of the tester

Extras

INCLUDED:
Battery.
Diamond-impregnated file. 
Very clear illustrated instruction booklet.
An extra set of leads is supplied for testing very large items that will not fit on the test-plate (though I have never known anyone who has needed to use these).

OPTIONAL EXTRA:
You will need a sample of 18ct yellow gold to get the tester to read accurately (technical term: calibrate) on 9ct to 22ct. If you also want to test 20ct to 24ct accurately you will also need a sample of exactly 22ct. UK traders will already have these (any item with a British hallmark) which is why we don't include them in the price. If you are not a trader or are in a country that does not have government-controlled marks, you will need the calibration samples, you will not be able to use the tester without them.

Probe

They say the probe gives "a few thousand tests" though we don't know if that's really only 1000 or if it might be 3000. So if we say, between 1000 and 3000 - that should be about right. 

The following is a guide:

For a specialist gold-buying business testing gold every day, the probe should last 3 or 4 months; for a busy jewellery shop with a sideline in buying gold it could last about a year; for just the very occasional testing it might last a couple of years but it will eventually dry out, and we recommend replacing it after a year. 

THESE TIMES ONLY APPLY IF YOU REPLACE THE CAP FIRMLY AFTER EACH USE! The probe is a modified felt pen, it dries up easily if you leave the cap off or don't replace it firmly. For this reason, the probes are not guaranteed.

Reliability

The tester is guaranteed for one year.

As of Autumn 2021:

- so far, we've sold about 250 of these and have had four returned. Of the four, two were faulty, one was not faulty, one had a flat battery.  We did also find 12 that were faulty when we received them from the manufacturers in the USA (unlike other companies, we test every item thoroughly before dispatch!) - we returned these to the USA, we did not sell them to our customers.

 

Export

There is no acid (the probes are filled with a salt solution), there are no export restrictions.

More information

Click here for more details and a review

Click here if you already have a KEE tester and need a replacement probe.

Click here see how easy it is to use, download a copy of the instruction manual (.pdf). Compare this with the instructions for other electronic testers!