Bad habits in the lab
Good experimental habits can help the experimenter better complete the experimental project, and a bad habit is likely to ruin your experiment.
Bad habits during the experiment
1. When the sample is weighed or measured, the data is first recorded on the draft paper, and the sample is finished and then copied to the record book; sometimes the record is completed after the experiment is completed;
2. The steps that need to be timed, using the time on the mobile phone or computer, the control is not strict;
3. When analyzing by gas chromatography, the syringe needle is directly smashed with a finger and not wiped with a filter paper;
4. After washing your hands, wipe directly on the buttocks of Bai Dawei;
5. In order to save trouble, the laboratory doors are often not closed, resulting in environmental conditions not being effectively controlled;
6. The instrument has not been lowered below the limit, and the instrument is turned off;
Bad habits of pre-processing
1. Before weighing, do not correct, do not see whether the horizontal bubble is in the center;
2. The balance begins to weigh and count without being stable;
3. When using the balance, you like to press the button with your fingertips, and the buttons are all broken;
4. When weighing the sample, repeat the weighing paper several times;
5. Sometimes do not wear gloves for weighing or other operations;
6. When the acid and alkali are configured, do not carry out in the fume hood;
7. The final link of constant volume does not use the dropper, but the bottle is used directly. The volume is not accurate enough, and it often exceeds the tick mark after standing;
8. When the volume is fixed, the volumetric bottle calibration line is not looked at;
9. When viewing the titration, do not remove the titration tube and look directly;
10. Do not record the steps when configuring the solution;
11. Use the medicine spoon to take the material, and the excess medicine is still returned to the bottle;
12. Do not pay attention to the wear of the experimental area: slippers go up and down, sometimes do not wear a white coat, take items with bare hands;
Bad habits after the experiment is completed
1. The laboratory waste liquid is directly poured into the lower pool instead of being treated for recycling;
2. After the titration is completed, the liquid in the burette is not poured out in time, and sometimes it will be placed for a long time;
3. Used flat plates and culture liquids are thrown away by hand;
4. After the balance is completed, do not close the balance door;
5. Put the special clothing for the laboratory outside the laboratory, such as the canteen;
Bad habits affecting others
The most important are the problems of experimental operation specifications, such as the saving of reagents, the care of instruments, etc. The light ones are problems of their own experiments, and the heavy ones are the problems that affect the laboratory, such as:
1. After the completion of the experiment, the site will not be cleaned up in time, leaving a mess to others;
2. Long-term occupation of laboratory public computers, online chat games, obstructing others to check information;
3. Public instruments are not cherished, and they are concealed and not reported after damage, shirking responsibility;
4. The bottle is not marked, I don’t know what it is inside;
5. The configuration information on the standard solution bottle is lazy and not updated;
6. Frequent and unplanned opening of the refrigerator, and the refrigerator door is opened for some operations, resulting in the unstable temperature of the refrigerator, affecting the freezing effect of other placed items;
7. Turning over the items placed in it, so that later people will have to work hard to find their own items;
8. Put food, ice cream, bread and other foods in the freezer where the inspection items are stored;
9. The items that have been disinfected by others are not opened privately in the ultra-clean platform. After re-packaging without notifying;
10. Wear gloves on the hands and stick with toxic substances (such as EB, PMSF, etc.), including door handles, keyboards, etc., causing others to barely stick to such toxic substances;
11. Bottles with toxic substances are not treated specially, but are placed together with other bottles;
12. Scribble on the label of the public reagent, indicating its own dose, and affecting the use of future generations;
13. The guns are placed indiscriminately, and the gun racks are not put back. The gun heads in the clean bench are not spilled;
14. When the pipette is used up, the maximum scale is not immediately adjusted, so that the spring of the gun is well rested;
15. The PCR instrument is not collected in time, and the PCR instrument is regarded as a 4 °C refrigerator, which affects the life;
16. Some things that are out of date are not cleaned up in time. For example, the cultured dishes are placed in the refrigerator, the laboratory plates are not enough, and the refrigerator is crowded;
17. After the electronic balance is used, it will not be cleaned up in time. The residual weighing material is in the balance and on the work surface, which affects the service life and accuracy of the electronic balance;
18. Do not let the air go out after the alcohol lamp is extinguished. After the alcohol lamp has been used up, do not remove the cover and cover it once. When someone else uses it next time, the alcohol lamp will vacate a high flame and easily burn people;
19. Do not pay attention to save energy, the computer does not shut down, the centrifuge is not in the state of cooling at night, open the refrigerator door for a long time, open the lid of the water bath is not closed, do not turn off the lights when leaving, air conditioning to open overnight.
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