Published
ISO 18644:2016 specifies the requirements for testing methods, sampling and preparation of test sample, marking and labelling, as well as package, transport, and storage of controlled-release fertilizer.
ISO 18644:2016 is applicable to controlled-release products having one or more primary fertilizer nutrient (nitrogen and/or phosphorous and/or potassium) in a controlled-release form. They can be made by bulk blending (BB) fertilizers or by special processes.
PUBLISHED
ISO 18644:2016
90.20
Standard under periodical review
Jul 15, 2026
To view the full content, you need to register or to log in to your account by clicking on the "Log in" button