MagneticScreenScale
Magnetic scale for testing gold.
With the MagneticScreenScale, you can quickly and non-destructively check gold articles such as bars or coins for authenticity. The detection of tungsten inclusions or other foreign metal cores is therefore made possible without drilling or other damages to the object. On the contrary: the ingots or coins do not even have to be removed from the plastic blisters or capsules. Simply place the ingots or coins in the target area above the magnetic measuring head and get a clear result in the form of a differential weight.
The original - dependable and proven!!
- High sample output rate
- Tests bars and coins for authenticity
- Also capable of testing silver, platinum or palladium
- Ideal for banks or dealers trading in gold
- No removal from blister or plastic capsule required
- Delicate and non-destructive measuring method
- Ideal for bars and coins up to 250 g weight (penetration depth approx. 3 mm)
- Identifies professional gold forgeries with tungsten / tungsten alloys
Utilising the magnetic properties of precious metals
The measuring principle is based on the different magnetic properties of materials. While the precious metals gold and silver show diamagnetic behaviour, typical counterfeit materials with high density, such as tungsten, tantalum or molybdenum, are paramagnetic. This difference can be used to detect the presence of foreign metal cores consisting of these paramagnetic metals.
Frequently asked questions about the MagneticScreenScale
If you cannot find your question here, please use the contact form or send us an enquiry directly to gold-analytix@marawe.eu.
This depends entirely on which objects you want to check:
For classic investors (coins and bars), the GoldScreenSensor (also measures through packaging) in combination with a caliper and precision scale is usually sufficient . For bars from 50 to 100 grams upwards, we also recommend the BarScreenSensor, for which the objects must be unpacked. The GoldScreenPen can also be used for smaller investment objects up to approx. 1 ounce.
For gold jewellery, measurement with a combination of CaratScreenPen and DensityScreenScale is ideal. The fineness of gold (carat number) can also be determined with our test acid sets.
As a tungsten detector, the MagneticScreenScale is an alternative to the GoldScreenSensor for gold objects from approx. 1/4 ounce to 250 g. This MagneticScreenScale is a good choice for those who want to focus entirely on gold and do not want to unpack 100 gram bars, for example.
- Be careful when handling the magnet, otherwise it may cause injury.
- There should be no electronic devices in the vicinity, as these can be damaged by the neodymium magnet.
- An electrostatic charge can falsify the measurement result, so make sure to discharge the packaging or the plexiglass structure with the anti-static spray.
- Test the objects for ferromagnetic materials/impurities beforehand with the supplied bar magnet, otherwise the scale may be damaged or the result is incorrect.
If you get a positive result from the magnetic balance, then the material at hand is diamagnetic. If the result is weakly negative, then it is paramagnetic and if it is strongly negative, then the object is probably ferromagnetic. In most cases, a negative result means that the test piece is not a pure precious metal. However, there are some exceptions to consider: e.g. older Krugerrand coins.
No, it is not possible to make any statements about precious metal alloys with the magnetic balance, as the differences are far too small. It is only possible to determine whether the test specimens are made of a counterfeit material.
For jewellery, there are many different alloys with a wide variety of metals. Since the magnetic scale measures very finely, even a small proportion of a ferro- or paramagnetic metal (e.g. nickel, platinum) can influence the result, making it no longer meaningful. Therefore, the magnetic balance is not suited for jewellery testing. The right choice in this case would be our CaratScreenPen
The magnet of the MagneticScreenScale is a strong neodymium magnet that must be handled with care. On the one hand, electronic devices and objects with magnetic storage (hard disks, credit cards) should be kept away from the magnet, otherwise they can be damaged. Secondly, you should keep it away from other strong magnets to avoid bruising, splintering or sparks.
People with pacemakers should also keep a sufficient distance from this magnet.
Information sheet: "Safe handling of magnets"