KEE ELECTRONIC GOLD TESTER, Model M509-GM

Summary The KEE was a very simple tester, analogue scale (not digital), calibration was by turning a knob (not electronic), it was for sale between 2018 and late 2025.  The KEE is no longer available and has been replaced by the Auracle ANALYSER and the Auracle PRO.  You already have a KEE tester? - the pen-probes are still available, see pen-probe for Kee electronic gold tester.   Extras Also included, the following free gifts (these don't come as 'standard'): Carrying pouch  Gold-polishing cloth Hallmark card and you will have the option of selecting a free gift! (online orders only).  OPTIONAL EXTRAS: A pen-probe is included, if you want a spare, select it from "Optional Extras". You will need a sample of 18ct yellow gold (it must be exactly 18ct). This is to 'match' the electronics in the tester reading on the display (technical term: calibration).  Anything made of 18ct yellow gold will do, just check carefully that it has a British hallmark, then you will know it's exactly 18ct.  If you are a trader, go through your scrap / jewellery, you are certain to have some 18ct hallmarked yellow gold. If not, an 18ct calibration sample is available from us, see OPTIONAL EXTRAS. Pen-probe  A pen-probe is included with your purchase, if you want a spare, click on View Optional Extras. A pen-probe is guaranteed for one month. The pen-probe is like a felt pen, if you don't replace the cap firmly it dries out. The manufacturers say it will give "up to a few thousand tests" (which could mean any number less than this). They also say it should be replaced after a year (a year from the date on its sticker). Comments from customers:  The KEE tests on average about 40 items a day and  the probe 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.  Sometimes a probe lasts a few months but sometimes only a few weeks. Conclusion:  Generally, a pen-probe lasts between 3 and 18 months but it can be as long as 2 years or as short as 6 weeks - the guaranteed is one month from the date of purchase. Although the manufacturers recommend you change it after a year, if it's still working, it's fine. Providing you are still able to calibrated the tester, you will get accurate results. The date on the sticker on the pen-probe is so that we know which batch it comes from and so that you have an idea when it's getting to be a year old. Irrespective of the date on the sticker, the guarantee is one month from the date you purchased it.  Disclaimer All testers must be used in conjunction with the user's skill, knowledge and experience. Under no circumstances shall QUICKTEST be liable for direct or indirect loss sustained in connection with any item. Nothing is 100% accurate, you must understand the limitations of any tester you buy. Full support given for items you buy from QUICKTEST. More information See a review of the KEE electronic gold tester See reviews of 9 electronic gold testers Buy a pen-probe for Kee electronic gold tester.