Uyinki ongapheli, ongasetshenziswa ngebhulashi, ipeni lomaka, isifutho noma ngokucwilisa iminwe yabavoti ebhodleleni, uqukethe i-nitrate esiliva.Ikhono layo lokungcolisa umunwe isikhathi esanele - ngokuvamile esingaphezu kwamahora angu-12 - lincike kakhulu ekugxilweni kwe-nitrate yesiliva, ukuthi isetshenziswa kanjani nokuthi ihlala isikhathi esingakanani esikhumbeni nasocingweni ngaphambi kokuba inkino eningi isulwe.Okuqukethwe kwe-nitrate yesiliva kungaba 5%, 7%, 10%, 14%, 15%, 20%, 25%.
Ipeni lomaka elingapheli lisetshenziswa kumunwe ongaphambili (ngokuvamile) wabavoti ngesikhathi sokhetho ukuze kuvinjelwe ukukhwabanisa okhethweni njengokuvota kabili.Kuyindlela esebenzayo yamazwe lapho izincwadi zokuhlonza izakhamuzi zingahlali zifanekisela noma zibe yizikhungo.