Air-Tight Lab Bottles: Ensuring an Air-tight Seal Using PARAFILM
We are often asked if our lab bottles or screw cap test tubes are "air-tight". For these items to be air-tight they require a perfect seal around the top of the bottle or tube and the screw cap lid. Often the pouring ring or lid disc will do this, however we would still only consider the bottles or tubes as leak-proof rather than air-tight.
A simple solution to creating an air-tight bottle or tube would be to seal the top with PARAFILM and then screw the lid down over the PARAFILM.
PARAFILM is a unique self-sealing, moldable and flexible film for numerous uses in the typical laboratory including electron microscope laboratories. PARAFILM has unique permeability properties, impressive water vapor transport properties, and is resistant to many common reagents. The thickness of all Parafilm products is 127µm.
Cut a square of PARAFILM to size and then use over the bottle or tube opening to create the seal.
Buy online: https://www.labdirect.com.au/plasticware/sealing-f...
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