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Tea-cher / tea bag


Tea-cher is a new type of tea bag which helps people differentiate tea quality. A tea quality marker in the shape of a leaf is attached to the tea bag. The marker can change its color and shape in accordance to changes in tea quality, reminding people the best drinkable time of the tea.Tea quality fluctuates. Many factors affect tea quality, including water temperature, the ratio of catechin, tannis, calcium, etc in tea leaf. Based on the “life cycle” of the tea, the marker will change color & shape from a bud implying tea in the making, to a green leaf implying best drinkable tea, and to a withered yellow leaf implying declined tea quality.


Zhejiang University

Zhejiang University
Hangzhou, China

Guilin Niu,
Zhejiang University

Xicheng Deng,
Zhejiang University

Yihao Deng,
Zhejiang University

Yunlei Huang,
Zhejiang University