Since the chemicals used in the lab, some toxic, some corrosive. Therefore determined not to permit the following six issues in the use of chemicals.

(1) can not touch the drugs.

(2) Do not put the nose to smell the gas container mouth conspire other solid, liquid or odor of drugs.

(3) not allowed to taste the taste of medicines.

(4) Experiment with leftover drugs returned to the lab, not abandoned.

(5) from the reagent bottle pouring liquid medicines not used, the remaining portion must not fall back into the bottle, so as not to affect the purity or concentration of the drug.

(6) laboratory drugs can not be used for other purposes (such as salt, sugar does not give anyone when seasoning).