In this note a reliable and efficient method for the determination of total nitrogen and protein in milk powder, according to EN ISO 8968-1:2014 , AOAC 991.20  and AOAC 930.29  is presented. The samples are digested using the KjelDigester K-449. The distillation and boric acid titration are performed with the KjelMaster K-375 by colorimetric titration and the KjelSampler K-376.
Nitrogen and protein determination in milk powder according to the Kjeldahl method by colorimetric titration
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