grade A milk

Within the context of agriculture, grade A milk is defined as:

Milk produced under sufficiently sanitary conditions to qualify for fluid (beverage) consumption. Also referred to as fluid grade milk. Only Grade A milk is regulated under federal milk marketing orders. Grade B milk (also referred to as manufacturing grade) does not meet fluid grade standards and is used only in manufactured products. More than 90% of all milk produced nationally is Grade A. Therefore, much of the Grade A milk supply is used in manufactured dairy products.