what is the recommended height for placing Air sampler during Active Air sampling ??
Are you talking about placement inside the clean room or RABS/Isolator
Basically placement of the air sampler is based on risk assessment. product contact point (in case of equipment) and working area (600FL - 2100FL)
I need to ask for clean rooms, i agree with your suggestion.
you can place it at working height below LAF i.e approx 1 meter.