International Organization for Standardization (ISO)
Latest
ISO 5515:1979
Scope
The method consists in heating a test portion until all organic matter is decomposed and a clear solution is obtained, either with sulphuric acid and nitric acid and in certain cases with hydrogen peroxide, or with sulphuric acid and nitric acid with the addition of perchloric acid.
ISO 5515:1979 history
1979ISO 5515:1979 Fruits, vegetables and derived products; Decomposition of organic matter prior to analysis; Wet method