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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!
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.
- 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 24ct (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
- Carrying pouch
- Diamond-impregnated file
- Very clear illustrated instruction booklet
- An extra set of leads 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).
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 want to test 20ct to 24ct accurately you will also need a sample of exactly 22ct. UK traders will already have these (anything 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.
The probe is filled with a salt solution, it is not toxic.
Probes are not guaranteed! - they are like felt pens, if you don't replace the cap firmly they dry out. The manufacturers say a probe gives "up to a few thousand tests" (which could mean less than 1000); they also say it should be replaced after a year (we don't know if that's because they don't expect it to last for more than a year or because they want to sell more).
Comments from customers:
- The KEE probe tests on average about 40 items a day and lasts about 6 months, 5000 tests. The solution in the probe outlasts the tip which becomes soiled from testing scrap. We replace the probe when reliability drifts and more regular calibration is required with our 18ct control sample.
- We get around 3 months and test around 10 times a day, often 15 times a day. Overall we think they last well.
- Our probe only lasted 3 months, we are very disappointed.
It's variable, some probes last approximately 12- 18 months each (about 2000 tests) and some 9 - 12 months (about 1000 tests).
- The probes seem to last us at least a year, I would say that it was at least 200 individual tests, and perhaps even up to 400 tests over that period.
Conclusion: a probe lasts between 3 and 18 months (though it's recommended you replace it after a year) - providing you take care to replace the cap firmly after use.
The tester is guaranteed for one year.
As of late 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 and one had a flat battery.
- We did also find several that were faulty when we received them from the supplier in the USA (unlike other companies, we test every item thoroughly before dispatch!), we returned these to the supplier, we did not sell them to our customers.
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