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Laboratory basic safety knowledge of laboratory for testing reagent personnel
Date [15:21, August 17, 2020]【 】Times

Reagent test The basic safety knowledge of personnel laboratory is as follows:


1. When the grinding plug of the reagent bottle is firmly stuck and can not be opened, the bottle plug can be cleaned and bumped on the edge of the test bench to make it loose; or the bottleneck part can be slightly heated by an electric blower to expand; or a few drops of liquid with strong permeability can be added between the glued gaps. It is strictly forbidden to knock with heavy objects to prevent the bottle from cracking.


2. It is strictly forbidden to eat, drink and smoke in the laboratory, and it is forbidden to import reagents and replace tableware with experimental instruments. There should be no label in the container containing the reagent and the sample.


3. Inflammable and explosive reagents should be kept away from the fire source and be watched by someone. When using water bath, avoid burning water bath. High temperature objects should be placed on the thermal insulation materials, and should not be placed at will.


4. When inserting or pulling out the rubber plug or hose, the glass rod, glass tube and thermometer should be padded with cloth, and it is not allowed to insert or pull out by force. When cutting glass rod and glass tube, assembling or disassembling food device, it is necessary to prevent sudden damage of glass rod and glass tube to cause stabbing injury.


 Reagent test


5. The installation, commissioning, use and maintenance of various testing instruments shall be carried out in strict accordance with the operation instructions of the instruments. Analytical balance, spectrophotometer, acidity meter and other precision instruments should be placed in the room with shockproof, dust-proof, moisture-proof, anti-corrosion, sun protection and small temperature change room to ensure the normal use of the instrument, and the power supply voltage should be consistent; the operation procedures should be strictly followed during operation. After using the instrument, the power should be cut off and the knobs should be restored to their original position.


6. Avoid electric shock when using electrical equipment. Do not touch the switch and electrical switch with wet hands or objects. Cut off the power supply in time after the experiment.


7. When there is an accident in the laboratory, the inspectors should deal with it in time and do not panic. When using precision fire extinguisher. When oil and combustible liquid are on fire, sand and wet clothes can be used to extinguish the fire. When metal objects and smoke H2SO4 catch fire, it is better to use yellow sand to extinguish the fire. For the fire caused by the circuit, the power supply shall be cut off first, and then the fire shall be extinguished. Take measures to prevent fire spread in time to reduce the fire spread.


8. The laboratory should be kept clean and tidy, waste paper, broken glass, match stick and other wastes should be put into the dustbin; waste acid, waste alkali and other waste liquid should be poured into the waste liquid bucket; the reagents scattered on the test bench should be cleaned at any time; the wet cleaning tools or vacuum cleaners should be used when cleaning the laboratory floor; hands should be carefully washed after the experiment, and careful inspection should be conducted when leaving the laboratory Whether the water, electricity and doors and windows have been closed.


9. In case of dizziness, vomiting, nausea and other symptoms due to inhalation of toxic gas, the inspectors shall first leave the scene and rest in a well ventilated place, and those with serious poisoning shall be sent to the hospital for diagnosis and treatment in time.


10. When the inspector burns, cover the wound with cotton soaked in ф = 95% alcohol, or apply egg oil (the fat extracted from eggs by organic solvent) on the wound, and apply the medicine to treat scald. In case of strong acid splash injury, the wound can be washed with water first, and then cleaned with w = 5% NaHCO3 solution. The seriously injured must be sent to the hospital for treatment.


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