Ukuhlanzeka komoya kuwuhlobo lwezinga lamazwe ngamazwe lokuhlukanisa elisetshenziswa ekamelweni elihlanzekile.Ngokuvamile yenza ukuhlolwa kwegumbi elihlanzekile nokwamukelwa ngokusekelwe esimweni esingenalutho, esimile nesiguquguqukayo.Ukuzinza okuqhubekayo kokuhlanzeka komoya nokulawula ukungcola kuyindinganiso eyinhloko yekhwalithi yegumbi elihlanzekile.Izinga lokuhlukanisa lingahlukaniswa libe yi-ISO 5(Ikilasi A/Ikilasi 100), ISO 6(Ikilasi B/Ikilasi 1000), ISO 7(Ikilasi C/Ikilasi 10000) kanye ne-ISO 8(Ikilasi D/Ikilasi 100000).
