1, beaker: used for various chemical reactions, as well as heating and cooling solutions. Beakers of different sizes can be selected as required. Test tube: used for small-scale chemical reactions and heating and cooling operations. The test tube can be directly used in titration experiment. Centrifugal tube: used for separation and precipitation experiments, as well as centrifugal separation operations.
2. Volumetric bottle: used to accurately measure the volume of solution and carry out constant volume operation. The volumetric flask has a standard scale and can be read directly. Buret: used in titration experiment, which can accurately control the amount of reagent added. The burette has a standard scale and can be read directly. Thermometer: used to measure the temperature during the experiment. Thermometers with different ranges can be selected as required.
3. Hydrometer: used to measure the specific gravity of the solution and determine the density. Funnel: used to filter and pour liquid and wash crystals. Mortar: used to grind solid samples and prepare solid substances for chemical reactions. Condenser tube: used for distillation and reflux experiment, as well as cooling operation.
Cleaning method of chemical laboratory
1. Cleaning experimental equipment: After the experiment, clean the experimental equipment in time. For glass instruments, it is necessary to clean them with clean water first, then with a small amount of detergent, and finally with tap water and dry them for later use. For metal instruments, rinse them with clear water and wipe them with a clean cloth.
2. Clean the laboratory floor: There are often some chips, stains and liquids on the laboratory floor, which need to be cleaned frequently. You can use a vacuum cleaner or mop to clean the floor, or you can use some detergents to remove stubborn stains.
3. Clean the experimental table: There are often some experimental equipment, reagents and sundries on the experimental table, which need to be cleaned regularly. You can use some laboratory-specific countertop cleaners to wipe the countertop, or you can use a wet cloth or sponge to remove stains and dust on the countertop.
4. Clean laboratory equipment: Laboratory equipment such as ovens, electric stoves and refrigerators need to be cleaned regularly. Cleaning can be carried out in accordance with the operating instructions of the equipment, and generally includes the steps of turning off the power supply, taking out articles, cleaning up residues, disinfecting, etc.
5. Regular cleaning: In order to keep the laboratory clean and hygienic, regular cleaning can be carried out. You can arrange personnel to take turns cleaning, including cleaning the dead corners of the laboratory, cleaning the drainage pipes and cleaning the vents.