Reference number
ISO 3420:1975
© ISO 2024
ISO 3420:1975
Ammonium hydrogen carbonate for industrial use (including foodstuffs) — Determination of ash — Gravimetric method
Edition 1
1975-11
Withdrawn
Withdrawn (Edition 1, 1975)

Abstract

Applicable to ash contents equal to or more than 0.0001 % (m/m). The principle consists in heating a test portion at low flame in a well-ventilated fume cupboard. After complete volatilization, heating in a furnace at a temperature of (575 25) °C to constant mass.

General information

  • Status
     : Withdrawn
    Publication date
     : 1975-11
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 1
  • Technical Committee :
    ISO/TC 47
  • RSS updates

Life cycle

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