1. Tsis muaj xim, tsis muaj ntxhiab, tsis- pakic, tsis- pob zeb rau tib neeg;
2. Cov tshuaj lom neeg zoo heev thiab cov cua sov kuj, tswj kev ruaj khov txawm tias thaum muaj kub;
3. Cov khoom siv solubility zoo heev, tau tshaj tawm cov kuab tshuaj organic, ua kom nrawm dua thiab txhim kho kev ua tau zoo;
4. Yooj yim los lis, yooj yim siv, thiab ib puag ncig phooj ywg.
