Fertilizers. Determination of urea condensates using high-performance liquid chromotography (HPLC). Isobutylidenediurea and crotonylidenediurea (method A) and methylen-urea oligomers (method B)— 24 стр.
Accuracy (trueness and precision) of measurement methods and results. Basic methods for the determination of repeatability and reproducibility of a standard measurement method— 62 стр.
Fertilizers. Determination of urea condensates using high-performance liquid chromatography (HPLC). Isobutylidenediurea and crotonylidenediurea (method A) and methylen-urea oligomers (method B)— 26 стр.