Ideal for sealing vessels, petri dishes, cells, etc. High flexible (stretches up to 200%). Clings even around irregular shapes. The sealing film is free of plasticisers, and consists largely of polyolefins and paraffin waxes Meets the requirements of the FDA when used at temperatures below 55 °C, as well as when GMP (Good Manufacturing Practice) is followed PARAFILM ® M is resistant to many polar substances for up to 48 hours, such as saline solutions, inorganic acids and bases; brittleness may occur after this time Temperature stability: -45 to +50 °C (melting point: 60 °C) Elasticity: 200 % Gas permeability in 24 hours at 23 °C and 50% RH for: Oxygen: 350 cm 3 /m 2 Nitrogen: 105 cm 3 /m 2 Carbon dioxide: 1100 cm 3 /m 2 Water vapour permeability in 24 hours at 37 °C and 90% RH for: 0.8 g/m 2 Sealing film PARAFILM ® M