What is PD CEN/TS 17403 about?
PD CEN/TS 17403 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.
Note: PD CEN/TS 17403 does not cover – all of the safety issues, if any, associated with its use. Users should be familiar with normal laboratory practices.
Who is PD CEN/TS 17403 for?
PD CEN/TS 17403 on the determination of insoluble nitrogen, methylene urea and solubility of nutrient polymers is applicable to:
- Manufacturers of fertilizers
- Suppliers, dealers and importers of fertilizers
- Laboratories involved in fertilizer assessment and research
Why should you use PD CEN/TS 17403?
Solid urea-formaldehyde and methylene urea slow-release fertilizers are non-coated and chemically synthesized nitrogen fertilizers with slow-release effects. In 1924, the first slow-release fertilizer patent in the world was issued to urea-formaldehyde (UF) and in 1955, UF was put into commercial production as the oldest slow-release fertilizer.
PD CEN/TS 17403 provides guidance on testing for cold water-insoluble nitrogen and hot water-insoluble nitrogen which includes principle, reagents, apparatus, procedure, calculation and expression of results which allows you to enhance the fertility of the fertilizers.
PD CEN/TS 17403 gives you resources to determine the solubility of nutrient polymers in phosphate buffer solution with a pH of 7.5 at 100°C which allows you to enhance the fertility of the fertilizers.