Iiyunithi zokupholisa nokugcinwa kobisi zibalulekile ekugcineni umgangatho kunye nokhuseleko lobisi olukrwada ukusuka nje luqokelelwe. Ezi yunithi zinciphisa ngokukhawuleza ubushushu bobisi ukuya kumaqondo akhuselekileyo, ngokuqhelekileyo malunga ne-4°C, ngokufanelekileyo zicothisa ukukhula kwebhaktiriya kunye nokugcina ubutsha. Eyilwe ngamatanki entsimbi ecocekileyo ecocekileyo kunye neenkqubo zokupholisa ezifanelekileyo, ziqinisekisa ukuba ubisi lugcina ixabiso lesondlo, incasa kunye nobomi beshelufu. Nokuba zezefama ezincinci okanye ezinkulu zobisi, ezi yunithi ziyinxalenye ebalulekileyo yekhonkco elibandayo, liqinisekisa ukuba ubisi luhlala lutsha de lulungele ukusetyenzwa okanye ukuhanjiswa.