U.S. Patent No. 6,594,008

In addition to standard polystyrene calibration films, ICL offers several other calibration options. Superior calibrations are performed with radially symmetric films which eliminate the orientation effects of extruded films used for NIST Standard 1921 calibrations.
Unit of Measure
Items
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Polystyrene Test Film - 38 microns Thick
List Price $40.00

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Polystyrene Test Film - 76 microns Thick
List Price $118.00

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Pair of Polystyrene Calibration Films - 38 microns & 76 microns Thick
List Price $267.00

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NIST Traceable Polystyrene Test Film
List Price $261.00

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Polystyrene Calibration Film for PhEur 2.2.24 Calibration of IR and FTIR Instruments
List Price $181.00