Qhov zoo: cua kub ceev, zoo nplawm ntawm cov tshuaj pickling, thiab tsis muaj dilution ntawm cov tshuaj pickling.
Disadvantages: Cov cuab yeej siv sib txawv, cov nqi tsim khoom siab, nquag evaporation vim overheating ntawm cov tshuaj pickling, thiab yuav tsum tau muab cov roj gaseous.
