Libotlolo tsa Reagent, tse tsejoang hape e le libotlolo tsa mecha ea phatlalatso kapa libotlolo tse koetlisitsoeng, ke lijana tse entsoeng ka khalase, borosilicate kapa lintho tse amanang le li-caps tse khethehileng holimo. Li reretsoe ho tšoara lik'hemik'hale ka mokhoa oa metsi kapa oa phofo bakeng sa tšebeliso ea laboratori 'me li bolokiloe ka lik'haboteng kapa lishelefong. Libotlolo tse ling tsa reagent ke amber (photochemical), sootho kapa khubelu ho sireletsa metsoako ea photosensitive ho tloha mahlaseli a bonahalang, ultraviolet le infrared a ka a fetolang; ha lehlakore la botlolo le tšoailoe ho bonts'a palo e hakanyetsoang (hangata e nang le phoso ea 10%) ea mokelikeli bakeng sa boemo bo fanoeng ka har'a setshelo, libotlolo tsena li bitsoa "ba fumaneng mangolo". Botlolo ea reagent ke mofuta oa glassware ea laboratori.