Question Detail

MIC 121 LaboratorySafety andEthicsin Microbiology Objective Question

Question

What is the recommended treatment for liquid biological waste before it is drained to a designated sink, according to the document?
Options
A Filter through a 0.22 µm membrane for 15 minutes.
B Heat to 121°C for 10 minutes.
C Add bleach to 10% final concentration and leave for 30 min contact time.
Correct Answer
D Mix with 70% ethanol for 5 minutes.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Under 'Blue Liquid Waste', the instructions are to 'Add bleach to 10% final concentration; leave 30 min contact time; drain to designated sink per local rules.'

Hint

The blue category of waste is for liquids, and it specifies a chemical treatment and contact time.

Question Info