1. Laboratory clothes should be worn, and goggles and masks should be worn when necessary.

2. No frolicking, smoking or eating in the laboratory, and no food in experimental utensils.

3. Don't leave during the test.

4. The instruments and reagents used in the experiment should be placed reasonably and orderly. The experimental table should be clean and tidy. When the experimental work ends or comes to an end temporarily, the instruments and reagents should be put back to their original places, the room should be cleaned, and the garbage should be put into the trash can, and it is not allowed to throw it around or into the pool at will.

5. Cleaning of glass instruments: firstly, rinse with clean water, then rinse with cleaning solution, and finally rinse with pure water and dry.

6. Do not taste or smell chemical reagents directly with your mouth or nose.

7. Flammable and explosive reagents shall be stored in a cool and ventilated place, and shall not be directly exposed to sunlight or close to heat sources.

8. When the skin or clothes are stained with chemical reagents, they should be washed immediately with clear water. If they are sprayed on the eyes, they should be washed immediately with an eye washer.

9. If toxic substances have been used for work, wash your hands immediately after work.

1. When diluting sulfuric acid, only the concentrated sulfuric acid can be slowly injected into the water, while stirring, and the reverse operation is not allowed.

11. You can't wear gloves when working with perchloric acid.

12. When preparing solution or releasing HCN, NO2, H2S, SO2, Br2, NH3 and other toxic and corrosive gases (such as HCL, H2SO4, HNO3, CCL4, etc.) in the experiment, it should be carried out in the fume hood.

13. When using an open flame, check whether there are flammable chemical reagents around.

14. When heating flammable reagents, direct heating with naked flame and electric furnace shall not be used, but with water bath.

15, when using flame heating, should pay attention to whether the sleeves, hair, etc. are too long and the possibility of burning.

16. When heating in a flask or test tube, the bottle mouth or nozzle should not face others or yourself.

17. When heating, the bottle mouth cannot be sealed to avoid expansion and explosion.

18, when using glass instruments, should first check whether there are cracks, whether there are sharp edges, in order to reduce accidents.

19, the burning flame, if you want to add fuel, should be put out and cooled before adding.

2. The waste of a small amount of toxic reagents must be flushed into the sewer with a large amount of water.

21. The waste acid and waste alkali with high concentration must be neutralized before being discharged into the sewer.

22, a large number of organic solvents shall not be directly put into the sewer, should be recycled or centralized treatment as much as possible.

23, the laboratory should be equipped with fire extinguishers, if necessary.

24. Before coming off work, check whether the water and electricity are turned off and whether the equipment that needs to be tested overnight is safe before leaving.

II. Management of Chemical Reagents

1. The chemical reagents in the laboratory are purchased, registered and accepted by the laboratory.

2. The name, label, date of manufacture, grade trademark, factory name, certificate of conformity, etc. of the purchased chemical reagents shall be checked one by one, and the "three noes" products and products exceeding the shelf life shall not be accepted and put into storage.

3. The chemical reagents that have been verified by experience should be stored separately according to the classification of general chemical reagents, drama drugs, inflammable and explosive substances, strong oxidants and strong corrosive agents, and they should not be piled up in a heap.

4. The highly toxic reagent should be sealed in the safe, and the key of the safe should be kept by the keeper and the person in charge of the laboratory respectively. Two people must be present at the same time when opening it, and put it back in time after use.

5. The medicine spoon for taking reagents must be cleaned before reaching into the bottle to dig medicines. After taking out the high-purity reagents or reference reagents, it is forbidden to pour them back into the bottle.

6, chemical reagents should be stored in a cool, dry, ventilated place, avoid direct sunlight, and reagents that need to be refrigerated should be stored in the refrigerator.

7. Chemists should always check the shelf life of reagents, and reagents that exceed the shelf life or deteriorate abnormally during the shelf life cannot be used.

8. Cover the reagent immediately after use.

v. management of test solution, titration solution and standard solution

1 test solution, titration solution and standard solution must be prepared in strict accordance with the prescribed methods of national standards, industry standards and enterprise standards, and the preparation should be recorded (including the name and quantity of reagents used in preparation and related calculations) for future reference.

2 titration solution shall be calibrated according to the regulations, and the calibration error shall not exceed the allowable value.

3 after the solution is prepared, it should be clearly labeled. The contents of the label include the name of the product, the preparation concentration, the preparation date, the preparer, etc. If necessary, the expiration date and special storage conditions should be indicated.

4 The storage time of titration solution and standard solution at room temperature is generally less than two months.

5 when using the solution, you should pay attention to the validity period of the solution. Don't use the expired solution. The deteriorated, polluted or invalid solution should be dumped at any time to avoid being misused by others.

6 when pouring the solution, carefully check whether the name of the label is consistent with the solution taken, so as to avoid analysis errors caused by inversion.

7 Close the cork immediately after the solution is used up. Do not expose it for a long time, and do not insert the straw into the reagent bottle for a long time.

8 alkaline solution and concentrated salt solution should not be stored in glass bottles with ground stoppers, so as to avoid the bottle stopper from being corroded or difficult to open after consolidation.

9 Solutions that are easily decomposed by light should be stored in brown bottles and kept in the dark.

VI. Management of glass instruments

1. Glass instruments can only be used after they have been checked by a special person, and should be re-calibrated after the expiration date.

2. Beakers, conical bottles, volumetric bottles and straws used in experiments should be kept in stock at any time for emergencies.

3. The glass instruments in the experiment should be kept clean at all times. When damaged, they should be placed centrally to avoid cutting the staff.

4. The new glass instrument should be cleaned with proper cleaning solution before use.

5, glass instruments should be cleaned in time after use, do not leave fat, acid and alkali, corrosive substances or toxic substances in the instrument.

6. The glass measuring instrument shall not be dried by heating.

7. For non-standard glass instruments with stoppers, such as volumetric bottles, colorimetric tubes and iodine measuring bottles, the stoppers should be tied to the tubes with plastic ropes or rubber bands before washing, so as to avoid breaking the stoppers or messing with each other.

8. When using the cuvette, you can only take the frosted surface, not the light-transmitting surface. When comparing colors, you should first use filter paper to absorb the external water droplets, and then wipe them with lens paper. You should not use filter paper to wipe the light-transmitting surface hard.

VII. Management of Instruments and Equipment

1. Standard Operating Procedures (SOP) shall be formulated for each inspection instrument and equipment, which shall be strictly implemented by the inspectors and shall not be operated in violation of regulations, so as not to damage the instrument or affect the test results.

2. Precision instruments and equipment should be installed and debugged by professionals, and handed over to post personnel for use after normal operation.

3. All kinds of instruments and equipment should be maintained and overhauled regularly, and kept in a normal state at any time. Maintenance and overhaul should be recorded.

4. In case of instrument failure, the maintenance personnel shall be notified in time for repair.

5. After the instrument is used, all components should be restored to the required positions, and the cleaning work should be done in time, and the power supply should be turned off and the protective cover should be covered.

6. Scrapped instruments and equipment should be marked and sealed.

7. Accounting for measuring instruments must be established and verified regularly.