ISO 17319:2015
Fertilizers and soil conditioners - Determination of water-soluble potassium content - Potassium tetraphenylborate gravimetric method

Standard No.

ISO 17319:2015

Release Date

2015

Published By

International Organization for Standardization (ISO)

Latest

ISO 17319:2015

Scope

This International Standard specifies a gravimetric method for the determination of the water-soluble potassium content of test solutions of fertilizers. It is suitable for use in arbitration and for reference purposes. This International Standard is applicable to those fertilizers containing more than 1,0 % K 2O or equivalent amount of K content.

ISO 17319:2015 Referenced Document

• ISO 3696:1987 Water for analytical laboratory use; Specification and test methods
• ISO 5317:1983 Fertilizers; Determination of water-soluble potassium content; Preparation of the test solution
• ISO 7407:1983 Fertilizers; Determination of acid-soluble potassium content; Preparation of the test solution

ISO 17319:2015 history

• 2015 ISO 17319:2015 Fertilizers and soil conditioners - Determination of water-soluble potassium content - Potassium tetraphenylborate gravimetric method