Proceedings PaperStandard reference material set for spectrophotometer calibration
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A new Standard Reference Material set has been developed at the National Office of Measures Hungary. The set includes six neutral absorbing glass filters for linearity measurements having optical densities 0.5 - 4.0, one cut-off filter for checking stray light and a didymium filter for wavelength calibration. A new method has been developed for high accuracy (< 0.06 nm) wavelength calibration. This accuracy was demonstrated at eight wavelengths during the past five years. The method is practically independent of bandwidth for spectrophotometer with bandwidths less than 10 nm.