Whey shall not, by weight, be more than 25 percent of the milk solids not fat. In no case shall the content of milk solids not fat be less than 6 percent. (a) Ice cream shall contain at least 1.6 pounds of total solids to the gallon, weigh not less than 4.5 pounds to the gallon, and contain not less than 20 percent total milk solids, constituted of not less than 10 percent milkfat. § 58.2825 United States Standard for ice cream. Web-Based Supply Chain Management (WBSCM).Service Contracting, Transportation and Port Requirements.Purchase Programs: Solicitations & Awards.Pilot Project: Unprocessed Fruits & Vegetables.Institutional Meat Purchase Specifications.Perishable Agricultural Commodities Act (PACA).