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ANNEX IU.K. Product Function Categories (PFCs) of EU fertilising products
PART IIU.K. REQUIREMENTS RELATED TO PFCS
PFC 5(C): UREASE INHIBITORU.K.
1.A urease inhibitor shall inhibit hydrolytic action on urea (CH4N2O) by the urease enzyme, primarily targeted to reduce ammonia volatilisation.U.K.
2.Compared to a control sample where the urease inhibitor has not been added, an in vitro test containing the urease inhibitor shall show a 20 % reduction in the rate of hydrolysis of urea (CH4N2O) based on an analysis carried out 14 days after application at the 95 % confidence level.U.K.