GB/T 9172-1988 Grades of basket-fired green tea for scenting

GB/T 8302-2002 Tea—Sampling GB/T 8302-2013 Tea—Sampling GB/T 8303-2002 Tea—Preparation of ground sample and determination of dry matter content GB/T 8303-2013 Tea—Preparation of ground sample and determination of dry matter content GB/T 8304-2002 Tea—Determination of moisture content GB/T 8304-2013 Tea—Determination of moisture content GB/T 8305-2002 Tea—Determination of water extracts content GB/T 8305-2013 Tea—Determination of water extracts content GB/T 8306-2002 Tea—Determination of total ash content GB/T 8306-2013 Tea—Determination of total ash content GB/T 8310-2002 Tea—Determination of crude fibre content GB/T 8310-2013 Tea—Determination of crude fibre content GB/T 8311-2002 Tea—Determination of dust and broken tea content GB/T 8311-2013 Tea—Determination of dust and broken content GB/T 8313-2002 Tea—Determination of tea polyphenols content GB/T 8313-2008 Determination of total polyphenols and catechins content in tea GB/T 8313-2018 Determination of total polyphenols and catechins content in tea GB/T 8314-2002 Tea—Determination of free amino acids content GB/T 8314-2013 Tea—Determination of free amino acids content