3 Pa.C.S. § 4131: Advertising packages for sale.

(a) Quantity of contents.--Whenever a commodity in package form is advertised in any manner and the retail price of the package is stated in the advertisement, there shall be closely and conspicuously associated with such statement of price a declaration of the basic quantity of contents of the package as is required by law or regulation to appear on the package.

(b) Exaggerations prohibited.--In connection with the declaration required under this section, there shall be declared neither the qualifying term "when packed" nor any other words of similar import nor any term qualifying a unit of weight, measure or count (for example, "jumbo," "giant," "full" and the like) that tends to exaggerate the amount of commodity in the package.

(c) Dual declaration.--Where the law or regulation requires a dual declaration of net quantity to appear on the package, only the smaller of the two units of weight or measure need appear in the advertisement.