ISO 7407:1983 PDF
Fertilizers — Determination of acid-soluble potassium content — Preparation of the test solution
Fertilizers — Determination of acid-soluble potassium content — Preparation of the test solution
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 1
- Дата публикации:
- 1 мая 1983 г.
- Издание:
- ISO IS 7407 edition 1 version 1
- ICS:
- 65.080
Specifies the reference method. It consists in boiling of a test portion with dilute hydrochloric acid solution.
Abstract
Overview
ISO 7407:1983 specifies the reference method for preparing test solutions of fertilizers for the determination of . The method is based on boiling a weighed test portion with a dilute hydrochloric acid solution, then diluting and filtering the extract for subsequent potassium analysis. This standard defines reagents, apparatus and procedural steps to ensure reproducible, comparable results in fertilizer potassium testing.
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