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CEN/TC 260/WG 7
Inorganic fertilizers and inhibitors
DIN EN 00260273
Organo-mineral fertilizers - Determination of the N-(n-butyl)thiophosphoric triamide (NBPT) urease inhibitor content
prEN 18317
Organo-mineral fertilizers - Determination of the N-(n-butyl)thiophosphoric triamide (NBPT) urease inhibitor content
ISO/CD 18717-1
Corrosion of metals and alloys--Performance test method for volatile corrosion inhibitor materials - Part 1: Vapor inhibiting ability