Re etsa le ho leka lihlahisoa tsa rona tsa selenium ho latela ka tieo litekanyetso tsa boleng le polokeho tse netefalitsoeng likarolong tsohle, ho kenyeletsoa ts'ebetso le ponahalo. Lihlahisoa tsa rona tsa selenium li na le bohloeki bo phahameng haholo, ho tloha ho 5N ho isa ho 7N (99.999% ho 99.99999%), 'me li khona ho finyella litlhoko tsa likarolo tse fapaneng, a re ke re hlahlobeng melemo le lits'ebetso tse ngata tse etsang hore lihlahisoa tsa rona tsa selenium e be tsa bohlokoa. ho mefuta e mengata ea liindasteri.