1.1. Scandium Fluoride ScF3 products are only used for scientific research tray balances, sterilizers, electric laboratory refrigerators, 1000ml conical flasks, 500ml graduated cylinders, glass rods, cotton plugs, kraft paper, strings, and petri dishes.

1.2. Distilled water, nutrient agar, 75% alcohol.

2. Operation method

2.1. Weigh 17 grams of nutrient agar, put it in a 1000ml triangular flask, add 500ml of purified water, stir well, put a cotton stopper, wrap it with kraft paper, and fasten the bottle mouth.

2.2. Put it in a sterilizer, autoclave at 115°C for 30 minutes, take it out and place it at room temperature, then put it in the experimental refrigerator for use (the temperature of the experimental refrigerator is controlled at 1-4°C).

2.3. When using, take it out of the experimental refrigerator, put it at room temperature, heat it in a water bath, and let it melt, take it out after it is all melted, and use it when it is placed at about 45°C.

2.4. When using Scandium Fluoride ScF3, wipe the periphery of the bottle with 75% ethanol, open the kraft paper to wrap the outer shell, slowly unscrew the cotton plug near the flame, hold the petri dish in the left hand, and the triangular flask in the right hand, slowly pour it into the petri dish, each time After pouring about 15ml into the dish, grill the cotton plug over the flame for a few seconds, immediately stuff it into the mouth of the bottle, wrap it with the outer layer of kraft paper, tie it with a string, and leave it for another use. ,