NA 057
DIN Standards Committee Food and Agricultural Products
Project
Inorganic fertilizers -Determination of cold water insoluble nitrogen and hot water insoluble nitrogen in solid urea formaldehyde and methylene urea slow-release fertilizers and determination of the solubility of nutrient polymers in phosphate buffer solution with a pH of 7,5 at 100 °C
Abstract
This document specifies a method for the determination of the cold and hot water insoluble nitrogen content in solid urea formaldehyde and methylene urea slow-release fertilizers and for the determination of the solubility of nutrient polymers in a phosphate buffer solution with a pH of 7,5 at 100 °C, in their pure form in inorganic fertilizers. It is not applicable to the following nutrient polymers: liquid methylene urea.
Begin
2025-12-01
WI
00260277
Planned document number
DIN EN 17403
Project number
05702506
Responsible national committee
Responsible european committee
CEN/TC 260/WG 7 - Inorganic fertilizers and inhibitors
