Palibe kukwera kwa kutentha: kutentha sikudzawonjezeka pamene zipangizo zimaphwanyidwa pansi pa ntchito yowonjezera pneumatic ndi kutentha kwa mphero kumasungidwa bwino.
Jet Mill yomwe imagwiritsidwa ntchito mu Labu, yomwe mfundo yake ndi : Yoyendetsedwa ndi mpweya woponderezedwa kudzera mu majekeseni odyetsera, zopangira zimafulumizitsa kuti akupanga liwiro ndi jekeseni mu chipinda champhero mu tangential malangizo, anagundana ndi grinded mu tinthu.
Dongosolo la mphero ya nayitrojeni yoteteza ndege imagwiritsa ntchito mpweya wa nayitrojeni ngati media migodi ya pneumatic kuti ipangitse kupukuta kwapamwamba kwambiri.