AN AIR TEST is taken to see if the if the indoor air contains substance from microbial damage, we use an air pump (pic. 1) where the air sucks through a s.c coal-pipe whose content later analyses.

This type of measure is often the result of material analysis to better specify where the damage is. In some circumstances you need to use direct air-feeding (pic. 2) We use an air pump and to that you connect a glass lid, and between them you have a coal pipe.

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Picture belongs to Pegasus Lab AB Picture 1	Picture belongs to Pegasus Lab AB Picture 2