BS EN ISO 8968-4:2016 Milk and milk products. Determination of nitrogen content. Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
IDF 20-1 Milk and milk products - Determination of nitrogen content - Part 1: Kjeldahl principle and crude protein calculation
IDF 50 Milk and milk products - Guidance on sampling
ISO 5725-1 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions*, 2023-07-01 Update
ISO 5725-2 Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method*, 2019-12-06 Update
ISO 707 Guide to Sampling Milk and Dairy Products*, 2023-12-24 Update
ISO 8968-1 Milk and milk products — Determination of nitrogen content — Part 1: Kjeldahl principle and crude protein calculation
BS EN ISO 8968-4:2016 history
0000 BS EN ISO 8968-4:2016(2017)
2016BS EN ISO 8968-4:2016 Milk and milk products. Determination of nitrogen content. Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
2002BS EN ISO 8968-4:2002 Milk. Determination of nitrogen content. Determination of non-protein nitrogen content