ISO 11050:1993
Wheat flour and durum wheat semolina — Determination of impurities of animal origin
Reference number
ISO 11050:1993
Edition 1
1993-07
© ISO 2024
Withdrawn
Withdrawn (Edition 1, 1993)

Abstract

The principle of the method described is hydrolysis of a test portion with a solution of hydrochloric acid at boiling point, concentration of the insoluble particles at a water/hydrocarbon interface, separation by filtration on a filter paper or membrane, microscopic examination, and counting under reflected light, of the impurities of animal origin (i.e. insects at all stages of their development, insect fragments, mites and their fragments, and rodent hairs and their fragments). Applies to wheat flours, with or without additives and having an ash yield not exceeding 0,63 % (m/m), and durum wheat semolinas.

General information

  • Status
     : Withdrawn
    Publication date
     : 1993-07
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 11
  • Technical Committee :
    ISO/TC 34/SC 4
    ICS :
    67.060 
  • RSS updates

Life cycle

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

  2. Store
  3. Standards catalogue
  4. ICS
  5. 67
  6. 67.060
  7. ISO 11050:1993