Parafilm M Laboratory Film

Seals labware quickly, effectively. Film prevents sample evaporation and contamination; protects anhydrous materials. Can be folded repeatedly and twisted around sharp surfaces without rupturing. Stretched lengthwise at 21°C (71°F), Parafilm M increases approximately 200%. Becomes more flexible, softer, stronger as temperature increases. Resistant to alcohol, mediumconcentration acid, and alkalies. Width: 10 cm (4"); 38-m (125') roll.