Merck RCS Plus Bedienungsanleitung Seite 34

The correction factor (Cf) to be set is derived from the following formula:
selected sample volume (L) x 60 (s/min) x 100%
Cf =
rotor flow rate (L/min) x running time (s)
Example:
Result of differential measurement (= rotor flow rate)
Result of running time measurement for 100 L sampling volume
and a correction factor = 0%
Selected sample volume
100 x 60 x 100
Cf =
47 x 125
Cf = 102.13% – 100% = 2.13%
mined for a rotor must be set on the microbial air sampler when this rotor is used.
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–100%
This means that the sampling time of the instrument must be increased by
2% or the correction factor set to ÷2 (= +2%).
If several rotors are used with an instrument, the instrument must always
be calibrated with each individual rotor. The correction factor thus deter-
–100%
47 L/min
125 s
100 L