Goldanalytix GoldScreenBox Instruction Manual page 12

uranium (the latter can be ruled out for obvious reasons) or in case of silver, e.g. mixture of lead
and tin or even molybdenum.
Step 3: Detection of lower alloys and counterfeits made of e.g. molybdenum, tantalum or
tungsten, tungsten alloys, tungsten carbide, brass, copper and so on up to a penetration depth of
about 250 µm (in case of silver) up to 650 µm (in case of Krügerrand) with our GoldScreenBox
(pure gold: ca. 350 µm).
Just to be clear: There is no individual method which can give you a reliable answer to whether
the tested precious metal is genuine or not. In case of anybody tells you something else this
person is definitely not honest or does not know it better! The reason is that any physical property
(i.e. conductivity, density, sound, etc.) of any precious metal can be imitated relatively easy with
certain materials. However, materials – especially for precious metals – which are identical in 2 or
more properties are significantly more difficult or almost impossible to produce (if, as seen above,
the density corresponds, there are only a few possibilities left - and those are e.g. identified by
their current conductivity). This is also true vice versa: In case of having the same conductivity, the
density for example will be different. We know for instance about PAMP-gold bars made of a
copper-steel alloy plated with a very thin layer of gold leading to an almost identical conductivity
like pure gold. These counterfeits must be examined thoroughly with other methods or can be
detected by their differing thickness or width relatively easily.
Please also have a look at our website www.gold-analytix.com/knowledge in order to get further
information about the correct procedure with the non-destructive tests of precious metals.
Absolute certainty, especially about the exact composition, can only be achieved with a
destructive, total chemical analysis.
Please don't be deterred by this information - the GoldScreenBox detects most of the current
counterfeits of bullion metals. For example, the current frequently and very well faked ¼, ½ and 1
ounce tungsten bars and coins are easily identified. We want to point out the conscientious
handling of the interpretations of the results.
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