Paper sterilising bags for autoclave sterilising. To BS6257 and using medical grade white sterilisation paper to BS6256. Heat seal closure bags are supplied with an adhesive band on the inside of the bag for sealing using a suitable heat seal machine. A pink indicator on each bag changes to brown under normal autoclaving conditions. All bags are gussetted and strongly constructed with a double turn at the bottom for extra safety. The opening is on the shortest side.