How To Select A Thin-Film Sample Support Material

As a guide, the adjacent chart relates % Transmittance through a thin-film substance vs. analyte-line energy, KeV, and Wavelength, in Angstrom units.

Select the analyte-line of interest in either KeV or Angstrom units
At the point of extrapolated intersection of each curve, read the % Transmittance. The greater the % Transmittance value the lower the absorption will be. This may be translated into other factors such as lower elemental detection limits and shorter integration times.
Select the thin-film substance with the highest % Transmittance value.
Consider the Degradation Resistance assignments to the thin film sample support substance for the sample types to be analyzed. Refer to the Degradation Resistance Chart for Additional Information.