Објављен
Specification of a semi-quantitative method. The content of free ammonia in a moulded article is of importance, when corrosion of metal inserts or contamination in contact with the article has to be considered. Distillation of the aqueous extract from a powdered test portion, coloration of the distillate by reaction with Nessler reagent and comparison of the colour with that of standard matching solutions.
ОБЈАВЉЕН
ISO 120:1977
90.93
Одлука о потврђивању стандарда
18. 6. 2025.
Plastične mase - Fenolformaldehidni otpresci - Određivanje slobodnog amonijaka
90.93 Одлука о потврђивању стандарда