Pennsylvania Statutes Title 3 Pa.C.S.A. Agriculture § 4136. Fluid dairy products

(a) Quantities.--All fluid dairy products, including, but not limited to, whole milk, skimmed milk, cultured milk, sweet cream, sour cream and buttermilk, shall be packaged for retail sale only in units of one gill, one-half liquid pint, ten fluid ounces, 12 fluid ounces, one liquid pint, one-third liquid quart, one liquid quart or multiples of one liquid quart, one-half gallon, one gallon or multiples of one gallon.

(b) Small packages.--Packages in units of less than one gill shall be permitted.

(c) Metric.--Metric equivalent packages of fluid dairy products shall only be units of 125 milliliters, 250 milliliters, 500 milliliters, 1 liter or multiples of 1 liter.