10 centimeters x 1 meter / 38 meters laboratory Parafilm M Pm996 sealing film laboratory cup petri dish heat shrink perfume dust protective wrapping

Due to Amcor's acquisition of Bemis, the product logo has changed, but the product itself has not changed, so customers should not be surprised when they find that the logo has changed after receiving the product. Parafilm laboratory film, a multi-purpose film, protects your products from moisture while allowing gas permeability. Minimize moisture loss and protect the contents of your laboratory tools with a flexible cover for test tubes, cakes, Petri dishes, and more. Comfortable, flexible, and self-sealing - Parafilm M laboratory film is an essential item in healthcare, pharmaceutical, and research laboratories. Specifications of this item: 1 roll of Parafilm M laboratory film in a cardboard dispenser. Item number: PM996 Roll size: 4 inches × 125 feet Made in the United States of America Effective and cost-efficient coverage for: Test tubes Vials Petri dishes Various tools and other irregular surfaces Wrapped to secure stoppers, caps, and lids more securely Shelf or tray lining to prevent slipping of bottles or tools Permeability: Oxygen: (ASTM 1927-98) 150 cm³/m²·day at 23°C and 50% RH Carbon dioxide: (Modified infrared method) 1200 cm³/m²·day at 23°C and 0% RH Water vapor: (ASTM F1249-01) Flat: 1 g/m²·day at 38°C and 90% RH Crinkled: 1 g/m²·day at 38°C and 90% RH Effects of common reagents: Potassium permanganate 5%: No obvious effect except for permanent dark brown color over 18 hours 0.1%: Same 5% effect except for slightly less color Iodine solution (0.1N): No effect except for browning stain over 18 hours Ethanol (95%): No obvious effect except some face whitening over 24 hours No obvious effect within 24 hours: Hydrochloric acid cone (12N) Disar (5N) Sulfuric acid cone (36N) Diel (5N) Nitric acid cone (16N) Diel (5N) Sodium hydroxide cone (22%) Ammonium hydroxide invert (28% NH3) Salt solution (NACL) (20%) Isopropyl alcohol (99%) Not recommended for use with chlorinated, non-polar, or aromatic solvents The film becomes soft and sticky at about 130° to 150°F (68°C).