Our thickness measurement testing method for the past several years has been by X-ray Fluorescence.

Our latest investment to ensure product quality is the FISCHERSCOPE® X-RAY XDL®-B

Typical applications are:
Single coatings of Zn, Ni,Cr, Cu, Ag, Au, Sn etc.
Binary alloy coatings such as SnPb, ZnNi and NiP on Fe.
Ternary alloy coatings such as AuCdCu on Ni.
Double coatings such as Au/Ni on Cu, Cr/Ni on Cu, Au/Ag on Ni, Sn/Cu on brass, etc.
Multiple coatings with up to 24 layers (with WinFTM® V.6 only).
Metallurgical alloys with up to 4 (or 24 - with V.6) constituent elements.

Below is the photo of the XDL - B Xray Thickness Coating Measurement System used at London & Brighton Plating, manufactured by Fischer Instrumentation UK

[CLICK HERE FOR MORE INFORMATION AT THE HELMUT FISCHER WEB SITE]