(b) For changes in alcohol content of less than 10 proof units, and prior to any product at the revised proof unit level arriving into the commission warehouse or the bailment warehouse, the liquor and wine representative or manufacturer shall notify the commission in writing of the change. Such notification shall include information:

1. (1) Describing the product for which the change is made;
2. (2) Specifying the current proof and the proposed proof of the product for which the request is made; and
3. (3) Specifying the size of the container for which the request is made.