ICL’s Basics™ 30° specular reflectance accessory is useful for non-destructive analysis of anything that will not transmit infrared energy. Typical applications are analysis of films and coatings and measurement of the thickness of free standing films with known refractive indices by fringe pattern analysis. The accessory is mounted on the standard universal 2” x 3” slide mount of any FTIR instrument. The mirrors of the accessory direct the infrared beam at the sample at an angle of incidence of 30 degrees. Mirrors are first surface coated with aluminum. The sample is placed face down on the sample stage at the top of the accessory for analysis. A set of three masks with small apertures is provided for use with small samples. A gold coated “alignment” mirror is provided to enable you to take background scans and for alignment of the mirrors to optimize energy throughput.

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