(1) the use of inflammable, explosive, corrosive and poisonous chemicals and electrical equipment shall strictly comply with the operating procedures。 The use of electrical equipment should be especially careful, do not use wet hand to open the switch and electrical switch。 Do not use any electric leakage instrument in case of electric shock。 After the appliance is used, power shall be cut off。
(2) no diet or smoking is allowed in the laboratory. All chemicals are forbidden to enter. Wash your hands after the experiment.
(3) do not splash on the skin and clothes when using caustic washing liquid, concentrated acid, concentrated alkali and other strong corrosive reagents. In the experiment, there is a strong acid, toxic or irritating gas, liquid and other circumstances, should be operating in the fume hood. When the liquid is heated in a test tube, the mouth of the test tube can not be applied to the person. Do not overlook containers that are heated.
(4) familiar with the storage place and use method of fire fighting equipment. In case of an accident, immediate measures should be taken to deal with it.
Clean glassware should be transparent, and its walls should be evenly wetted with water without hanging beads。
一般的器皿如烧杯、试剂瓶、锥形瓶等可先用自来水洗,然后用洗衣粉、去污粉等配制的普通洗涤液涮洗,污染严重时可用热的洗涤液或专用洗涤液涮洗,然后用自来水冲洗,后用少量去离子水涮洗内壁 2～3 次。
The vessels such as beakers, reagent bottle, bottle cone can first use tap water to wash, and then use the ordinary washing liquid washing detergent, decontamination powder preparation, washing liquid or special washing liquid washing pollution available when hot, and then washed with tap water, then with a small amount of deionized water washing wall 2 ~ 3 times.
Burette, flask, pipette, due to its capacity, precise shape, should not use the brush to wipe the inner wall of machinery. It is usually soaked with a special lotion and then rinsed with tap water and deionized water in turn.
The special detergent has hydrochloric acid solution, chromic acid lotion and so on. Chromate bath has strong corrosion, strong oxidation and strong acid, should be used with special care. In addition, hydrochloric acid and ethanol solution (1: 2) commonly used in the washing tank, absorbed by the colored solution or organic reagent staining after colorimetric tube and pipette etc..