IS 3025 Pt.4-1983

标准号：IS 3025 Pt.4-1983
发布日期：1985/8/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：1.Prescribes the following two methods for the determination of colour.a) Platinum cobalt (visual comparison ) method, andb) Spectrophotometric method.1.1 Platinum cobalt (visual comparison) method is applicable to nearly all samples of potable water and is not applicable to colour measurements on water containing highly coloured industrial wastes.1.2 Spectrophotometric method is applicable for all types of water including domestic and industrial wastes. It is generally used in case of industrial wastes that cannot be determined by platinum — cobalt method.