The method serves for the determination of siliceous impurities, together with the silica endogenous to the plant. It cancels and replaces ISO Recommendation R 763-1971, of which it constitutes a technical revision. It consists in incinerating of a test portion at 525 °C, and separating of the mineral matter insoluble in dilute hydrochloric acid solution. The method for the determination of mineral impurities, generally originating from the soil, is described in ISO 762.

General information

  • Status :  Withdrawn
    Publication date : 1982-03
  • Edition : 1
    Number of pages : 2
  • :
    ISO/TC 34/SC 3
    Fruits and vegetables and their derived products
  • 67.080.01
    Fruits, vegetables and derived products in general

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)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.