Protein determination in animal feed using colorimetric titration
Protein determination in animal feed according to ISO 5983-2 and AOAC 2001.11 by digestion with Kjeldahl tablets and hydrogen peroxide followed by colorimetric titration using Optrode
A reliable and efficient method for the determination of total nitrogen and protein in animal feed according to ISO 5983-2 and AOAC 2001.11 is presented. The samples were digested using Kjeldahl tablets, hydrogen peroxide and the KjelDigester K-449. Distillation and boric acid titration were performed with the KjelMaster System K-375 / K-376 equipped with the colorimetric sensor Optrode. According to the norms, bromocresol green / methyl red mixed indicator was added to the boric acid for the automized colorimetric titration.
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Related Instruments
KjelMaster K-375 & KjelSampler K-376 / K-377
Perform potentiometric and colorimetric titrations with the KjelMaster K-375 and a free choice of methods at perfect usability. Gain high throughput, more automation and sophisticated data management for convenient nitrogen and protein analysis.
KjelDigester K-446 / K-449
The KjelDigester K-446 / K-449 reduces the block digestion process by up to 2 hours and meets the highest safety requirements. The high degree of automation is the perfect match to the KjelMaster System allowing more samples per day to be processed.
