標準號：BS EN 1557-1997
中文標準名稱：表面活性劑.運送過程中光學透明彩色液體(產品)X、Y、Z三色值色度特征
英文標準名稱：Surface active agents - Colorimetric characterization of optically clear coloured liquids (products) as X, Y, Z tristimulus values in transmission
標準類型：G73
發布日期：1997/5/15 12:00:00
實施日期：1997/5/15 12:00:00
中國標準分類號：G73
國際標準分類號：17.180.20;71.100.40
適用范圍：This European Standard specifies a method for the colorimetric characterization of optically clear, slightly tinted liquids (products) by broad-band measurement of pure transmittance with tristimulus value measuring filters as TX, TY and TZ. Since the tristimulus value measuring filters of simple tristimulus colorimeters meet the Luther condition to a limited extent only it is necessary to deliberately restrict the liquids (products) to slightly tinted ones in order to be able to measure them sufficiently exactly with a single calibration against uncoloured distilled water. If the colour of heavily coloured solutions is measured with simple tristimulus colorimeters, it is necessary to calibrate the instrument with a spectrometrically measured standard of very similar colour.