ISO 6636-1:1986

Fruits, vegetables and derived products — Determination of zinc content — Part 1: Polarographic method

Publication date: Apr 24, 1986

General information

Current stage: 90.93 Effective date: Jan 13, 2022

Originator: ISO

Owner: ISO/TC 34/SC 3

Type: International Standard

ICS: 67.080.01

Languages: French English

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Status: Published

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Scope

The method consists in ashing of a test portion in a muffle furnace at 525+25 C, treating the ash obtained with hydrochloric acid, neutralizing with ammonia solution and determing of the value using an ammonia/ammonium chloride electrolyte. Copper, tin, lead and cadmium do not interfere.

Life cycle

NOW

PUBLISHED
ISO 6636-1:1986
90.93 Standard confirmed
Jan 13, 2022

REVISED BY

ABANDON
ISO/DIS 6636-1

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