Certified Guinea Pig Diet is a complete life-cycle diet designed for reproduction, lactation, growth and maintenance of guinea pigs. It meets the vitamin C requirements of guinea pigs. This diet is formulated using managed formulation, delivering Constant Nutrition® . This is paired with the selection of highest quality ingredients to assure minimal inherent biological variation in long-term studies. Prior to shipment, a sample of this product is assayed for environmental contaminants.