How to maintain laboratory equipment
(1) High temperature equipment
Common high temperature experimental equipment mainly includes muffle furnace, electric oven, drying oven (oven), electric furnace (bright electric furnace and box electric furnace). Improper use of high-temperature equipment is prone to fire, explosion, electric shock and other accidents.
1. The rated power of the power distribution socket (board, box) should be matched with the electric heating equipment used, and the seriously aging power line should be replaced in time.
2. Ensure that the temperature control and insulation of the heating equipment are in good condition.
3. When using the heating equipment, leave a sufficient safety distance between flammable and explosive materials and debris.
4. The heating device is controlled to a suitable temperature and an appropriate heating time. Do not use it for a long time at the upper limit of the electric heating device.
5. The operator must not leave the heating equipment at the site of use. Disconnect the power immediately after use.
6. Electric ovens can only be used for drying glass, metal containers and samples that are not decomposed and non-corrosive during heating. It is forbidden to bake solvents, oils and other flammable, flammable volatiles or just rinsed with ethanol or acetone. Samples, instruments.
7. After the high-temperature muffle furnace is used, the furnace should be slowly cooled and then opened to open the furnace door to avoid the occurrence of explosives, glassware quenching and cracking.
8. It is generally not allowed to use an open flame electric furnace in the laboratory. If it is necessary to use it in special circumstances, it must be approved by the school.
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