Parafilm® M PM996 Laboratory Sealing Film Roll, 4” Film Width, 125 ft. Long, 1/Pk

Efficient and cost-effective covering for: Test tubes Beakers Vials Petri dishes Flasks Various other instruments and objects with irregular surfaces Overwrap to further secure stoppers, lids and caps Shelf or tray liner to prevent slipping of bottles or instruments Permeability Oxygen: (ASTM 1927-98) 150 cc/m² d at 23°C and 50% RH Carbon Dioxide: (Modulated IR Method) 1200 cc/m² d at 23°C and 0% RH Water Vapor: (ASTM F1249-01) Flat: 1 g/m² d at 38°C and 90% RH Creased: 1 g/m² d at 38°C and 90% RH Effects of Common Reagents Potassium Permanganate 5%: No apparent effect except permanent dark brown coloration in 18 hours 0.1%: Same as 5% except slightly less color Iodine solution (0.1N) No effect except staining brown in 18 hours Ethyl Alcohol (95%) No apparent effect except some face whitening in 24 hours No apparent effect in 24 hours: Hydrochloric Acid conc. (12N)dil. (5n) Sulphuric Acid conc. (36n) dil. (5n) Nitric Acid conc. (16n) dil. (5n) Sodium Hydroxide conc. (22%) Ammonium Hydroxide conc. (28% NH3) Salt (NACL) solution (20%) Isopropyl Alcohol (99%) Not recommended for use with chlorinated, non-polar aliphatic and aromatic solvents Film becomes soft and sticky at about 130°F to 150°F (68°C) Compare with similar items