date:Aug 14, 2012
iables the volume of beverage remaining in the bottle and consumer height.
Conducting tests on green tea and Coke, Chihara and Yamazaki found that the optimal opening diameters for consumers were 35.4mm and 34.4mm respectively.
They cautioned that their results only applied to study participants, but said the results conformed with a previous study finding that 33mm was best-suited for young Japanese adult consumers, irrespective of beverage type.
These results are in agreement with results