ISO 9648:1988

Sorghum — Determination of tannin content

Publication date: 29 dhj 1988

General information

Current stage: 90.93 Effective date: 4 pri 2021

Originator: ISO

Owner: ISO/TC 34/SC 4

Type: International Standard

ICS: 67.060

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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Scope

The method consists in extraction by shaking with dimethylformamide, then after centrifuging, addition of ferric ammonium citrate and ammonia to an aliqiot part of the supernatant liquid and spectrometric determination, at 525 nm, of the absorbance of the solution thus obtained, and determing of the tannic content using a calibration curve prepared using tannic acid.

Life cycle

NOW

PUBLISHED
ISO 9648:1988
90.93 Standard confirmed
4 pri 2021

REVISED BY

ABANDON
ISO/CD 9648

National adoptions

SSH ISO 9648:1988

DPS

Melekuqe - Përcaktimi i përmbajtjes së tanineve.

60.60 Standard published

DPS/KT 275 më tepër