M00000991
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ISO 29462 1st Edition, March 15, 2013 Field testing of general ventilation filtration devices and systems for in situ removal efficiency by particle size and resistance to airflow
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Availability date: 07/13/2021
Description / Abstract:
This International Standard describes a procedure for measuring
the performance of general ventilation air cleaning devices in
their end use installed configuration. The performance measurements
include removal efficiency by particle size and the resistance to
airflow. The procedures for test include the definition and
reporting of the system airflow.
The procedure describes a method of counting ambient air
particles of 0,3 μm to 5,0 μm upstream and downstream of the
in-place air cleaner(s) in a functioning air handling system. The
procedure describes the reduction of particle counter data to
calculate removal efficiency by particle size.
Since filter installations vary dramatically in design and
shape, a protocol for evaluating the suitability of a site for
filter evaluation and for system evaluation is included. When the
evaluated site conditions meet the minimum criteria established for
system evaluation, the performance evaluation of the system can
also be performed according to this procedure.
This International Standard also describes performance
specifications for the testing equipment and defines procedures for
calculating and reporting the results. This International Standard
is not intended for measuring performance of portable or movable
room air cleaners or for evaluation of filter installations with
and expected filtration efficiency at or above 99 % or at or below
30 % when measured at 0,4 μm.