scope:

This document defines the Proof of Application (POA) for testing the performance of NIRS systems that are used on board of a tank trailer used for transport of animal slurry for the determination of the total nitrogen and total phosphorus content in animal slurry. This method is used to test whether the NIRS system on board of an individual tank trailer meets the performance requirements for the legal determination of total nitrogen and total phosphorus content in animal slurry according to the Dutch fertilizer law in general and in particular AP05 [1].