◆Lo matshini wokufunxa unceda ukutsala iintsholongwane kwi-aspirator ukuthintela usulelo.
◆Inoyilo lwebarb enyathelweyo kwaye ingena ngokukhuselekileyo kwii-aspirators zayo ngokukhuselekileyo.
◆ Ukumelana nomoya omncinci, uthuli olukhulu oluqulethe umthamo,