Calibration Of The Validation Kit - Cantium Scientific P0059 Operating Manual

Calibration of the Validation Kit

Calibration of the validation kit shall only be undertaken by Cantium
Scientific Limited. It is recommended this is done at five yearly
intervals.
Variable area flow meters impose a restriction on air flow. This will
cause a reduction in the normal flow of air through the MB1 and
MB2 bioaerosol samplers. Through experimentation during
development, this restriction is known at various set-points on the
tube scale and is compensated for on the flow markings on the
tube.
The exact printing position on each tube is adjusted to take into
account the equivalent true flow based on the known restrictions.
Once printed, the tube is calibrated for life and no further
adjustments are necessary.
Five year inspections will check the scale against the known
restrictions using the same flow meter rig used during manufacture.
This rig is a calibrated secondary standard held by the glass flow-
tube manufacturer.
For calibration, please arrange through your local distributor or
directly with Cantium Scientific Limited.
15