Pechiney Plastic Packaging PM998 - Parafilm M all-purpose laboratory film, size: 20" X 50'EACH
Quickly, effectively seals labware Waterproof, moisture-proof film prevents sample evaporation, contamination; protects anhydrous materials Can be folded repeatedly and twisted around sharp surface without rupturing Increases approximately 200% when stretched lengthwise at 21°C (70°F)