ISO 3420:1975
Ammonium hydrogen carbonate for industrial use (including foodstuffs); Determination of ash; Gravimetric method

Standard No.

ISO 3420:1975

Release Date

1975

Published By

International Organization for Standardization (ISO)

Status

Withdraw 2002-05

Latest

ISO 3420:1975

Scope

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.

ISO 3420:1975 history

• 1975 ISO 3420:1975 Ammonium hydrogen carbonate for industrial use (including foodstuffs); Determination of ash; Gravimetric method