Skim
Also called nonfat milk, has had as much fat removed as technologically possible, bringing it to less than 0.5%. It must contain at least 8.25% solids not fat and must be fortified with 2,000 IU of vitamin A per quart.

Lowfat (1%, 2%)
Has had enough milk fat removed to produce milk with milkfat contents of 0.5%, 1.0%, 1.5% or 2.0%. All contain at least 8.25% milk solids not fat. Because vitamin A is removed with the milkfat, vitamin A is added to lowfat milk at a level of 2,000 IU per quart.

Whole
Must contain not less than 3.25% milkfat and not less than 8.25 % milk solids notfat. All our milk is fortified with vitamin Dat a level of at least 400 IU per quart