Purified ingredient diets are perishable. They should be stored in a cool, dry place. Refrigeration at 2^o-4^oC (36^o-40^oF) or lower is highly recommended; generally, diets can be stored this way for up to six months. Most diets can be preserved even longer by freezing; however, your use of diets beyond six months would be at your discretion and subject to the protocols of your lab.

Grain-based diets will have a shelf life of varying lengths depending upon their composition. Generally, they will keep in cool dry storage for about the same length of time as for the comparable LabDiet^® product, about six months. Please inquire about the specific shelf life of any custom grain-based diet.

All Tablets/”Precision Pellets” have a shelf life of one year, unless otherwise indicated on the label.

All TestDiet^® product labels carry the specific shelf life information for each container of product.

Gamma irradiation is used to destroy bacteria and mold spores, primarily for use of diets in barrier facilities. It also has the effect of reducing sources of spoiling, particularly grain-based diets.