Thin Film XRF reference samples

Energy spectra of three 7-element reference samples. The energy range from ~2 keV to ~40 keV is covered with peaks of comparable intensity.

X-ray fluorescence reference sample with up to 7 different elements on a silicon nitride membrane (above), PEEK sample holder (right).
The sample is available with or without a PEEK sample holder (typical diameters 30 mm or 49 mm, others on request). The sample frame size is 10x10 mm² or 5x5 mm², having a 5x5 mm² or 2x2 mm², respectively, usable coated membrane area. Other sizes available on request.

Advantages of Thin Film XRF reference samples:
• Absorption free standard: no matrix correction necessary
• Substrate thickness of 200 nm permits transmission measurements and leads to low background from the substrate
• Mass depositions in the range of ng/mm2 (1-3 atomic layers) permit quantification without the need to interpolate from higher values
• Uncertainty = 1 ng/mm2 (1 atomic layer)
• Wide selection of non-overlapping XRF lines, exact calibration curve with many points over a large energy range
• Signal strength easily adjustable by thickness, similar intensity for all elements
• High degree of uniformity & homogeneity (better than 1% for the full sample area)
• Application for adjustment of confocal μ-XRF possible
• Wide range of available elements (standard and tailored compilations)

Mass deposition of the elements on the reference sample with corresponding fluorescence emission line energies.

Lateral homogeneity measured by XRF μ-beam mappings

Download: Reference sample prospectus (pdf)

News 2019:
We are planning to design and fabricate a second series of our successful Thin Film XRF reference samples.
Let us know about your needs and ideas HERE and your desired product might be in stock in the future!

SEM characterization materials

EDS-TM002 is a test material for the performance check of an X-ray spectrometer attached to a SEM developed in cooperation with BAM, Berlin, Germany.
It is fabricated as a compact material (size: 8 x 8 x 0.5 mm³).

EDS-TM002 can be purchased from the BAM webshop.

Photo of EDS-TM002 (left) and energy spectrum recorded with 10 kV (right).