Requirement for low and intermediate density polythene sheet of nominal thickness not less than 0.5 mm for general purposes including pipe fabrication, chemical, food and building industry uses. Additionally the specific requirements for pink and brown sheet for external surgical appliances (splints) are stated.Cross References:BS 572BS 1792BS 1972BS 1973BS 2660BS 2746BS 2782BS 2919BS 3978BS 4646