Chemplex Industries XRF Consumables Catalogue - Specac
Chemplex Industries XRF Consumables Catalogue - Specac
Chemplex Industries XRF Consumables Catalogue - Specac
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<strong>XRF</strong> THIN-FILM SAMPLE SUPPORT WINDOWS<br />
HOW TO SELECT A THIN-FILM SAMPLE SUPPORT MATERIAL<br />
As a guide, the adjacent chart<br />
relates % Transmittance<br />
through a thin-film substance<br />
vs. Analyte energy, KeV, and<br />
Wavelength.<br />
1. Select the analyte-line of<br />
interest in either KeV or<br />
Angstrom units.<br />
2. At the point of extrapolated<br />
intersection of each curve, read the % Transmittance.<br />
The greater the % Transmittance value the lower the<br />
absorption will be. This may be translated into<br />
other factors such as lower elemental detection<br />
limits and shorter integration times.<br />
3. Select the thin-film substance with the highest %<br />
Transmittance value.<br />
4. Consider the Degradation Resistance assignments<br />
to the thin film sample support substance for the<br />
sample types to be analyzed.<br />
CHEMICAL<br />
Acid, dilute or<br />
weak<br />
MYLAR<br />
or<br />
HOSTAPHAN<br />
DEGRADATION RESISTANCE OF THIN-FILM SUBSTANCES<br />
POLYCARBONATE Etnom-S POLYPROPYLENE POLYIMIDE PROLENE<br />
(KAPTON)<br />
G G G E N G G<br />
ULTRA-<br />
POLYESTER<br />
Acids, conc. G G G E N E G<br />
Alcohols,<br />
N G G E G E N<br />
aliphatic<br />
Aldehydes U F F E E E U<br />
Alkalies,<br />
N N G E E E N<br />
conc.<br />
Esters N N F G G G N<br />
Ethers F N F N U N F<br />
G N E G E G G<br />
Hydrocarbon,<br />
aliphatic<br />
Hydrocarbon, N N E N E N N<br />
aromatic<br />
Hydrocarbon, F N F N F N F<br />
halogenated<br />
Ketones N N G G G G N<br />
Oxidizing<br />
agents<br />
HOME<br />
BACK TO QUICK<br />
REFERENCE<br />
CHART FOR <strong>XRF</strong><br />
SAMPLE CUPS<br />
CONTINUOUS<br />
ROLLS AND<br />
PRECUT CIRCLES<br />
F N F F N F F<br />
E=Excellent, G=Good, F=Fair, N=Not recommended, U=Unknown<br />
Shaded columns represent thin-film window materials determined “Unsuitable for analyzing sulfur in diesel fuel, gasoline and other<br />
petroleum products containing aromatic hydrocarbons,” ASTM D-4294-03 and ASTM D-6445-99 (2004), in addition to other<br />
independent testing.<br />
IMPORTANT: The degradation resistance of thin-films contained in the above illustration is provided as a matter of information purposes only and is not<br />
intended to preclude actual testing and suitability of use and applications. The responsibility of acceptance and safety resides totally with the user.
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