This standard specifies the principle, instruments and utensils, measurement procedures and results calculation methods for the determination of water-soluble ash and water-insoluble ash in tea. This standard applies to the determination of water-soluble ash and water-insoluble ash in tea.
GB/T 8307-2002 history
2013GB/T 8307-2013 Tea.Determination of water-soluble ash and water-insoluble ash content
2002GB/T 8307-2002 Tea--Determination of water--soluble ash and water--insoluble ash content