Premier Pet Nutrition offers a NIR machine with three petfood-specific calibration factors. The Cook Value calibration measures how well a dry petfood has been cooked, stating the level of starch gelatinization (%). Peroxide Value is a measure of the level of oxidation in fats in a petfood which has a significant influence on the palatability and shelf-life of a dry petfood. The Water Activity calibration gives instant feedback on how likely a petfood is to spoil once packed.