Packing material cost standards set valuation, assignment, disclosure and treatment rules for primary, secondary and reusable packaging. Cost Accounting Standard on Packing Material Cost (CAS-9) prescribes principles for the classification, measurement, assignment, presentation and disclosure of packing material cost in cost statements. It covers receipt valuation, issue valuation, treatment of imported, self-manufactured and captive-consumed packing material, and the exclusion or adjustment of finance costs, abnormal costs, subsidies, recoveries and scrap. It also states that primary packing forms part of production cost, secondary packing forms part of distribution overheads, and reusable packing is assigned by reference to expected reuse. Disclosure is required for valuation basis, variances, related-party transactions and other material items.