Wisconsin Administrative Code
Department of Revenue
Chapter Tax 8 - Intoxicating Liquors
Section Tax 8.41 - Size of containers

(1) No manufacturer, rectifier, wholesaler, retailer or other person licensed for the sale of intoxicating liquor shall possess intoxicating liquor, not including wine, in a container of more than 1.75 liter (59.1752 fluid ounce) capacity, except alcohol intended for industrial, medicinal, scientific or mechanical purposes.

(2) Manufacturers and rectifiers may have in their possession intoxicating liquor in containers greater than 1.75 liters in size for purposes of manufacturing or rectifying or for sale to other manufacturers or rectifiers in Wisconsin or in interstate commerce.