Determining composition, layer thickness and authenticity testing

Throughout the jewellery and precious metals industry, analyses must be carried out accurately because the content of gold and other precious metals in an object determines its value. It is also essential to verify the total composition of the alloy, not just analysing the precious metals but also other metals such as copper, zinc and others. For this, the instruments for material analysis must meet requirements such as accuracy and speed and not use a destructive method. The traditional technique known as Assay assists in determining the gold content, whether for gold bars, coins or valuable jewels. However, it is a destructive and time-consuming method, making it impossible to get results immediately.

The analysis of precious metals and helping with quality control and cost reduction are of paramount importance to meet regulations such as INMETRO Ordinance No. 43 / 2016, which requires strict control of cadmium and lead, highly harmful elements to health. With the need for high precision, quality solutions, Fischer developed high-performance equipment and analytical capability for users in the jewellery, semi-jewellery, galvanic baths and pawnbrokers markets

X-Ray Fluorescence Solution

Goldscope SD® Series

Tailor-made to analyse gold and precious metals, Fischer’s GOLDSCOPE SD® series offers a solution for the non-destructive testing of materials. The hardware and software of these robust X-ray fluorescence instruments are tailored to the unique requirements of the jewellery and gold industries.


  • Determine the element composition of precious metals such as gold, silver, rhodium, platinum and palladium, as well as less valuable metals such as copper, zinc, etc. The results can be expressed in different units of measurement, such as PPM, percentage, carats and others.
  • Measure the thickness of layers for jewellery and semi-jewellery manufacturers, with results expressed in micrometres, micro-inches, among others.
  • Analyse galvanic baths (liquids), and measure the chemical composition and contaminants for better-scaling processes (available only with FISCHERSCOPE® XAN).
  • Complies with EN 61010, DIN ISO 3497 e ASTM B 568


  • Gold Trading
  • Analysis of precious metals
  • Manufacture / Import of jewellery and semi-jewellery

Certified Gold Standard
For reliable measurements, it is necessary to use calibration
standards that meet the requirements of the quality management

FISCHER offers a wide range of certified standards according to the
procedure accredited by DAkkS.
The standard portfolio includes more than 300 calibration standards
for EDXRF analysis and covers a large number of applications for
different industries.


Companies need to monitor and control the formulation of their electrolyte baths very closely. Controlling the composition of the bath can determine the quality of the layer applied to the target substrate material. For example, metal coatings of AuCuCd, AuCuIn, RhRu can be monitored both in their composition in the bath and the thickness of the layer applied onto the part.

A particular measuring cell makes it possible to analyse the plating bath and identify any metals in the solution immediately by examining the elements simultaneously in just a few seconds, eliminating the need for sample preparation and use of reagents, for example, in titration.

Sigmascope® Gold

One of the challenges in the market for buying and selling gold is to ensure authenticity since counterfeit material is often only plated with gold. The SIGMASCOPE® GOLD range is ideal for determining the authenticity of gold using electrical conductivity, analysing the surface and the entirety of the coins, gold bars, and even ingots in a non-destructive, fast and easy way.

Product features of the SIGMASCOPE® GOLD Range

  • Reliable determining of electrical conductivity of coins and gold bars
  • Non-destructive test method
    Measurements in just a few seconds
  • Positive Material Identification (PMI) of counterfeits
  • For testing coins and thin ingots of up to approximately 100 g
  • For testing large bars of precious metals from 1 oz (31.1 g) to 1 kg


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