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Coating Thickness XRF 🢂 Advantages of Foil standards

1. Foils can be used for more than one application. For example, a series of tin foils may be used to calibrate and measure for tin plating thickness on copper, or various bronze alloys, or steel, or various thicknesses of copper laminated PCB samples. One “set”of tin foils in this case may be used for all the listed applications. You only require a blank sample of each base material on which you need to measure tin. Hard plated standards usually can be used for a single application or a small set of similar applications, and therefore are more limited in the number of applications they can be used for, compared to foil standards.
2. A small number of foils with the same material can be combined to create a greater number of thicknesses than the number of foils you have.
3. Multilayer coating combinations can be created by combining different element single layer foils together.
4. Foils with 2 layers are available and can often be certified with greater accuracy than dual layer hard plated standards.
5. Foil standards never develop intermetallic layers since they are not deposited on any substrate material

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