International Organization for Standardization (ISO)
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ISO 11286:2004
Scope
This International Standard specifies a method for the classification of grades of tea according to an analysis of their particle size. It is not applicable to large, leafy grades of tea.
This method may not be suitable for blends of tea.
ISO 11286:2004 history
2004ISO 11286:2004 Tea - Classification of grades by particle size analysis
1997ISO 11286:1997 Tea - Classification of grades by particle size analysis