Chokhuthala cha mndandanda wa HNS chimagwira ntchito ndi njira yozungulira yokhuthala ng'oma kuti chipeze zotsatira zabwino kwambiri zochizira zinthu zolimba.
Ndalama zogulira malo, zomangamanga ndi ntchito zonse zasungidwa chifukwa makinawa amatenga malo ochepa chifukwa cha kapangidwe kake kosavuta, zofunikira zochepa zoyendetsera madzi komanso kugwira ntchito yokha.

Kawirikawiri imayikidwa patsogolo pa mbale ndi makina a chimango kapena centrifuge kuti ichepetse mphamvu yogwiritsira ntchito zida zochotsera madzi pambuyo pake.