FAQ - Pharmaceutical/Life Sciences Particle Counting

Lasair II Particle Counter

Question
When sampling a room to do a room qualification with the Lasair particle counter, what height should the samples be taken? Close to the floor or at working height?

Answer

ISO states that particle counting should be done at work height. In a room near a work place this is typically 1.0 m +/- 10%; in a corridor or walk way this is 1.5 m +/- 10%. Absolutely not on the floor.