Utilizing quality reference standards is critical to maximizing the performance of many x-ray fluorescence analyzers. While offered for many applications (RoHS testing, geological interests, petrochemical analysis, etc) a majority of reference standards that the in-house XRF standards laboratory of Eastern Applied Research develops are for coating thickness measurement applications.
One of the questions we will ask buyers of new reference standards is if they want plated or foil pieces. Some may not realize what those options are...
When it comes to purchasing XRF calibration standards for coating thickness analysis you should know what type of format you are seeking as there are two styles to choose from: plated or foil. Both are commonly used throughout industry and provide reliable results.
When determining the best fit for you consideration must be made to the model of XRF analyzer the standards will be used on, constituents of interest and target thicknesses, whether the calibration curve will be created with or without use of fundamental parameters (FP) and how the reference materials will be used.
About Foil Standards: this style is created with the foil of desired material and thickness attached to a stainless steel foil holder. The foil is then temporarily secured on top of a plastic chip containing the desired base material. When a range of thicknesses are required, the user will have several foils of difference thicknesses to span the desired range.
Pros of Foil Thickness Standards:
About Plated XRF Standards: these are created by electroplating the desired material of specific thickness onto a permanent base material. When a range of standards is required, the user will have standard pieces of several different thicknesses to span the desired calibration range (layers and base material in one piece for each thickness).
Plated Thickness Standard Pros:
These are just a few thoughts to help you begin the discussion with Eastern Applied Research's XRF standards laboratory when it is time to purchase new reference standards. Request a phone call or email by a lab technician to discuss further.