When they were done in the cafeteria. The lab was their next lecture class. The Chemistry teachers have arranged the apparatus on the table and every one student when they got into the lab were supposed to begin mixing their mixtures at once.
"You all know what we are doing. It is called household bleach (5.25% sodium hypochlorite) mixed with water. It is an inexpensive and effective disinfectant. By mixing different amounts of bleach with water, you can make a high, intermediate, or low-level disinfectant. High-level Disinfection: (1:10 dilution of bleach | 5000 ppm) When to be used: Cleaning up large blood or body fluid spill. When directed by public health.
How to mix the bleach solution:
62 ml (1/4 cup): 562 ml (2¼ cups) water, or
250 ml (1 cup): 2250 ml (9 cups) water
Intermediat
