Screw cap
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A screw cap or closure is a common type of closure for bottles, jars, and tubes.
A screw cap on a plastic bottle
Common screw closures (from left to right): Plastic bottle with plastic screw cap, Dispensing closure for salad dressing (with inner seal), Break-away closure for syrup, Dispensing pump closure, Dispensing closure (with inner seal), Spray pump, Metal closure on glass jar, Child resistant closure, Cap on toothpaste, Measuring cap
plastic screw cap with break-away tamper-evident band
Sports cap closed
Oxygen transmission rate
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Oxygen transmission rate is the measurement of the amount of oxygen gas that passes through a substance over a given period. It is mostly carried out on non-porous materials, where the mode of transpo
Permeation cell setup for the measurement of the oxygen transmission rate