Fruit and vegetable juices - Determination of stable carbon isotope ratio (<(hoch)13>C/<(hoch)12>C) in the pulp of fruits juices - Method using isotope ratio mass spectrometry; German version ENV 13070:1998— 10 стр.
Precision of test methods - Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests; Identical with ISO 5725, edition 1986— 44 стр.
Fruit and vegetable juices - Determination of the stable carbon isotope ratio (13C/12C) of sugars from fruits juices - Method using isotope ratio mass spectrometry
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 (ISO 5725-2:2019); Text in German and English
