This part of GB/T 18798 specifies the sampling method for solid instant tea (hereinafter referred to as instant tea). This section applies to the sampling of instant tea in various containers, including sampling at the point of processing, sampling at various stages of distribution, and sampling at retail packaging. When sampling, different operation steps or special measures should be taken according to different sampling purposes, such as for testing the characteristics of tea grains (such as bulk density, powder fluidity, particle size) or for testing components (such as moisture content, ash content) of.