Standards, Polystyrene Film, NIST-Traceable, FTIR

SRM 1921b: This Standard Reference Material(SRM) is for use in the calibration of the wavelength scale of spectrometers in the infrared. NIST traceable Polystyrene Test film, certificate of traceability to five (5) NIST 1921b frequencies, set of 2 films each mounted to 2” x 4” cardstock holder