Membrane dryers aid test devices
March 1st 2008 The latest generation of
membrane dryers from
Parker Hannifin is being
used by Axis-Shield,
manufacturer of in-vitro
diagnostic test devices, to
ensure the integrity of the
drying agent bags and
cotton and cellulose pads
supplied with its products.
The units provide a
simple and reliable drying
solution, with minimal
operating and maintenance
costs.
Two membrane dryers
were positioned to keep
incoming materials in the
automated assembly
process as dry as possible.
The first unit is used to
maintain a dry environment
for the desiccant bags
before they are packed; the
second is used for drying a
cotton pad before assembly
into a diagnostic test device.
Dryers filter water vapour
from a condensed air
source through the hollow
fibres in the specially
designed membrane.
Clean, dry air is then fed to
the production line. A small
portion of the dry air
produced is redirected
along the length of the
fibres to sweep out, and
vent to atmosphere, water
vapour laden air that has
permeated the membrane.
As they require no
electricity, the devices are
inexpensive to run.
Maintenance is just a twiceyearly
filter change. More articles from Parker Hannifin Ltd: | 
