Solids Not Fat (SNF) consists of everything except milk fat and water. Fat and SNF content in milk of lactating cows depends upon breed of animal and can be maintained by balanced feeding (dry fodder, green fodder, compound. SNF in milk means solid factor in milk other than fat. The total solids and the SNF content of milk are related to its fat percentage and specific gravity by the Richmond's formula. Packaged milk can be categorised into three according to fat and solids-not-fat ( SNF) contents. Milk Composition based on fat percentage and SNF percentage in milk yield has played a huge role in dairy product prices.