Reference number
ISO 5547:1978
© ISO 2024
ISO 5547:1978
Caseins — Determination of free acidity (Reference method)
Edition 1
1978-06
Withdrawn
Withdrawn (Edition 1, 1978)

Abstract

Covers both caseins obtained by acid precipitation or lactic fermentation and rennet caseins. The principle of determination is based on the aqueous extraction of a test portion at 60 degrees centigrade, filtration and titration of the filtrate with a standard volumetric sodium hydroxide solution using phenophthalein as indicator.

General information

  • Status
     : Withdrawn
    Publication date
     : 1978-06
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 2
  • Technical Committee :
    ISO/TC 34/SC 5
    ICS :
    67.100.99 
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