Description OSD Western Diet Used in Research Obesity Diabetes Osteoporosis Hypertension Atherosclerosis Metabolic Syndrome Packaging Product is packed in 12.5 kg box. Each box is identified with the product name, description, lot number and expiration date. Lead Time 5-7 business days. Gamma-Irradiation Yes. Add 3 days to delivery time. Form Pellet, Powder, Liquid Shelf Life Most diets require storage in a cool dry environment. Stored correctly they should last 6 months. Control Diets Custom diets available on request.