Pure tips for a safer and greener chromatography
During the chromatography run, the health of the scientist is of top priority. The sample itself also needs adequate care. The environmental impact must not be forgotten.
Discover which measures can easily be adopted to adequately protect the users, their samples and their surroundings.
Read about Pure tips for a safer and greener chromatography.
Chromapedia: the complete guide
The complete Chromapedia presents you with essential knowledge for developing and performing the optimal flash chromatography and prep HPLC method. Rely on concise theory and clear explanations of all parts of the chromatography process. Use chromatography basics to develop your own method with consumables, detection methods, stationary and mobile phases that ideally fit your application.
Nitrogen and Protein Determination in Animal Feed according to the Kjeldahl method
The determination of protein in feed is a routine procedure for quality assurance and labelling. A simple and fast method for protein determination in feed products according to the ISO 5983-2:2009 and AOAC 954.01 regulations is introduced below. The sample is digested with sulfuric acid and Kjeldahl Tablets Titanium using the digest Automat K-438, followed by distillation and titration with the KjelMaster K-375 with KjelSampler K-376.
Nitrogen Determination in Pharmaceutical Active Peptides
Nitrogen and total protein determination in pharmaceutical products are described in the European Pharmacopoeia (Ph.Eur.) section 2.5.9 and 2.5.33 method 7 [1, 2]. In the Pharmacopoeia of the United States (USP), nitrogen determination is described in section 461 [3]. Therein, different titration techniques are specified. The Ph.Eur. describes back titration in the presence of the indicator methyl red mixed solution and the USP potentiometric boric acid titration.