R.I. Gen. Laws § 47-15-14: Federal laws and regulations.

The sale of any commodity packaged in a container, wherein both the container and the contents thereof comply with any act of congress or rules or regulations promulgated thereunder, appertaining to weight, measure, or count, does not violate the provisions of this chapter; nor does the sale of alcoholic beverages in containers complying with a rule, regulation, or an approval of the United States Treasury Department, Bureau of Internal Revenue, Alcohol Tax Unit, or of the state department of health, and pertaining to weight, measure, or count constitute a violation of the provisions of this chapter.