【Before the Experiment】
1.Open doors and windows.
2.Prepare distilled water and obtain ice.
3.Distribute reports.
4.Check the first aid kit, fire extinguisher, and other safety equipment.

　

【During the Experiment】

1.Monitor the usage of washing acetone, distilled water, and ice, and replenish as needed.

2.If the floor is wet, mop it dry to prevent any accidental slips or falls.

【After the Experiment】
1.Check and close all switches for gas, faucets, ovens, rotary evaporators, water baths, and cooling circulators. Collect all washing solvent bottles and graduated cylinders, pour waste liquids into the waste container.
2.Clean the sink (including the central drainage groove), return acetone, dishwashing detergent, test tube brushes, and cloths to their designated positions. Clean the filter screen, organize the hairdryer, and tidy up the corridor storage cabinet, including drink cans and trash.
3.Organize the fume hood platform, securely lock the lids of chemical containers, clean up any spills, rinse pipettes, and wipe the fume hood and lab platforms.
4.Organize the balance room: brush away any solid chemicals outside the weighing area, wipe off any chemicals accidentally spilled on the balance, wipe the balance cabinet and platform, turn off the balance switch, sweep and mop the balance room.
5.Sweep and mop the floor inside the laboratory.
6.Close and lock all windows, back doors, and windows near the corridor along Technology Road, and take out the classified garbage to the garbage cart.
7.After being inspected and approved by the teaching assistant (or assistant TA), sign out following the evaluation.