标准号:IS 7424-1987
发布日期:1987/11/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard prescribes the method of measurement of whiteness of plantation white sugar ( vacuum pan ) in solid state by means of photoelectric reflectance meter for preparation of reference samples and introduction of higher colour grades.1.1.1 This method is not intended for day-to-day routine grading of sugar in sugar factories which shall be done on the basis of visual comparison with reference samples.