Fluxana provide different kind of XRF thin films, sample cups, preparation tool, filmvelope and other accessories for loose powder and liquid analysis.
Many different sample cup types are available and can be used depending on the instrument’s holder type.
In principle, two materials are used:
Polyester (Mylar) and polypropylene. The film materials differ in the resistance to chemicals. While polyester is stable with respect to solvents, aliphatics and fuels, polypropylenes provide more stability with respect to fluids rich in oxygen (e.g. water, polyglycols and high boiling oils).
Polypropylene is especially suited to the trace analysis of solid samples, as it has no major contamination in it. In contrast, Mylar contains the undesirable phosphorus and calcium.
Films such as Hostaphan (polyester with a silicon contamination) or polycarbonate (without contamination, preferred for fuel analysis) are restricted or no longer available.
Kapton is not very transparent for the fluorescence radiation of light elements and is, therefore, only useful for the analysis of elements with a higher atomic number.
