International Organization for Standardization (ISO)
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ISO 356:1996
Scope
Gives general guidance for the preparation of samples of essential oils submitted to a laboratory for analysis. Does apply to essential oils which are solid or partly solid at room temperature and cannot be analysed directly. The method cannot be used for samples for determination of water.
ISO 356:1996 history
1996ISO 356:1996 Essential oils - Preparation of test samples
1977ISO 356:1977 Essential oils — Preparation of test sample