ISO 753-9:1981
ISO 753-9:1981


Specifies a method for a visual comparison of the turbitity obtained by adding a barium chloride solution to a solution of a test portion acidified with hydrochloric acid, with that similarly obtained from a sulphate solution of known concentration. Using a test portion of 100 g, the method is applicable directly to products having inorganic sulphate contents in the range 0,001 % (m/m) to 0,1 % (m/m). This range can be extended by adjusting the mass of the test portion. It has also been approved by the International Union of Pure and Applied Chemistry (IUPAC). ISO 753/1 to ISO 753/11 cancel and replace ISO Recommendation R 753-1968.

General information 

  •  :  Withdrawn
     : 1981-10
  •  : 1
     : 2
  •  : ISO/TC 47 Chemistry
  •  :
    71.080.40 Organic acids

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