Comparison of CIE chromaticity values Original Research Article

A chromaticity comparison took place in order to fulfil the requirements of the mutual recognition agreement (MRA) between the South African National Metrology Laboratory (CSIR/NML) and the Taiwanese National Measurement Laboratory (ITRI/CMS). The absolute spectral reflectance of each standard of a set of 12 BCRL Series II standards was measured on spectrophotometers for 0°/d geometry by a comparison method with a white reference standard. The CIE chromaticity values were calculated under the conditions of Illuminants A, C and D65 for a 2° observer. Good agreement was found in general between the results of CSIR/NML and ITRI/CMS within the respective uncertainty calculations.