CPC G01N 33/146 (2013.01) [B32B 7/12 (2013.01); B32B 15/09 (2013.01); B32B 15/20 (2013.01); B32B 27/36 (2013.01); B65D 23/02 (2013.01); B67C 3/02 (2013.01); B32B 2255/06 (2013.01); B32B 2255/26 (2013.01); B32B 2255/28 (2013.01); B32B 2270/00 (2013.01); B32B 2439/66 (2013.01)] | 12 Claims |
1. A method for determining a reference value of a wine for feasibility of filling an aluminum can, the method comprising:
acquiring a pH, an alcohol concentration, and a free sulfite concentration for multiple kinds of wines;
calculating a molecular SO2 concentration of each of the multiple kinds of wines from acquired values of the pH, the alcohol concentration, and the free sulfite concentration;
enclosing the multiple kinds of wines into aluminum cans of an identical type, respectively, thereby obtaining multiple kinds of canned wines;
putting the multiple kinds of canned wines in storage and evaluating quality of the canned wines after the storage; and
determining an upper limit value of the molecular SO2 concentration based on an evaluation result obtained from the evaluating.
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