Liquid chemical products -- Measurement of colour in Hazen units (platinum-cobalt scale)

رقم المستند: NL ISO 2211 : 2009
القطاع: chemical Technology
TC: NL TC 47
ICS: 71.040.50
This International Standard specifies a method of measuring the colour in Hazen units of liquid chemical products. It is applicable only to clear, slightly coloured liquids for which the colour characteristics are close to those of the reference platinum-cobalt scale. Such colour characteristics are generally describable as "brownish-yellow". This method is applicable whenever specified by an ISO Recommendation or International Standard relating to a given product.