Molecular
sieve foil is generally described as a material having very small and tiny
holes to pass small molecules from them and leaving bigger molecules on the
surface. The holes on this foil is small enough to block big molecules to enter
through it and the smaller molecules are only allowed to pass through them. The
small holes are very precise and uniform according to their application. The
most common use of molecular sieve foil is desiccant as in activated charcoal
and silica gel.
Some of its
applications include its use in the petroleum industry specially for the
purpose of purifying the gas streams. It is also very much used in the
chemistry labs for the separation of chemical compounds and drying reaction
starting materials. One very useful application of this foil is in the
filtration of air supplies specially for breathing apparatus.