Itemu elivamile lezinqubo zomjovo ezisebenzisa izixazululo zamakhemikhali ezikhethekile ukuze kuthuthukiswe ukutholwa kukawoyela, ukususa ukubola kokwakheka, ukuhlanza imibhobho evinjiwe noma izendlalelo zokwakheka, ukunciphisa noma ukuvimbela ukugqwala, ukuthuthukisa uwoyela ongahluziwe, noma ukubhekana nezinkinga zokuqinisekisa ukugeleza kukawoyela ongahluziwe.
Ishubhu yethu ibonakala ngobuqotho kanye nekhwalithi okufanele isetshenziswe ngokukhethekile ezimweni ezingaphansi kolwandle ezimbonini zokukhipha uwoyela negesi.