Parafilm® M

No matter whether you wish to seal beakers, Erlenmeyer flasks, weighing bottles or graduated cylinders, the highly elastic and stretchable Parafilm® M laboratory film fits the opening of any vessel. It saves specimens from contamination or evaporating. Furthermore, it prevents fallen over flasks from spilling. Parafilm® M stretches up to 200 % of its original size and clings even around irregular shapes and surfaces.

If Parafilm® M comes into contact with foods, the relevant regulations are to be observed. Parafilm® M complies with to the provisions of the US FDA Food and Drug Administration when used below 55 °C and observance of GMP (Good Manufacturing Practice).

Physical properties:Chemical resistance:
Toxicity: not toxic
Melting point: 60 °C
Flash point: 301 °C
Temperature range
(continuous use): - 45 °C to + 50 °C
Parafilm® M is resistant up to 48 hours against 
many polar substances, e. g. saline solutions, inorganic acids and alkaline solutions. After that period embrittlement may occur.
Stretchability: 200 %
Elongation at tear: 300 %
Effects of 48 hours of exposure at 23 °C
Gas permeability in 24 hours at 23 °C with 50 %
relative humidity:
Oxygen O2 ≤ 350 cm3/m2
Acids:
Hydrochloric acid 36.5 %: resistant
Sulphuric acid 98 %: resistant
Nitric acid 95 %: resistant*
Nitrogen N2: ≤ 105 cm3/m2
Carbon Dioxide CO2: ≤ 1100 cm3/m2
Alkaline solutions:
Sodium hydroxide 22 %: resistant
Ammonia 28 %: resistant
Water vapour permeability in 24 hours
at 37 °C and 90 % relative humidity: 0.8 g/m2
Saline solutions:
Sodium chloride 20 %: resistant
Potassium permanganate 5 %: resistant*
Iodine solution 0.1 ml/l: resistant*
Storage:
Parafilm® M can be stored for at least 3 years at a temperature between 7 °C and 32 °C and relative humidity of 50 %.
Organic solvents:
Methanol: resistant
Ethanol: resistant
Isopropanol: resistant
Diethylether: not resistant
Chloroform: not resistant
Carbon tetrachloride: not resistant
Benzene: not resistant
Toluene: not resistant
 * Brown discoloration
Cat. No.LengthWidthPackagingUnit
740155015 m50 cmRoll6
740381038 m10 cmDispenser12
740750575 m5 cmDispenser24
740751075 m10 cmDispenser12


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