Electrolysis Practice Exam

What should be used to wipe clean each electrolysis needle before sterilization?

1. 50% alcohol

2. 70% alcohol

3. Pure water

4. Antiseptic solution

The correct answer is: 70% alcohol

Using 70% alcohol to wipe clean each electrolysis needle before sterilization is the best practice due to its optimal effectiveness in disinfecting surfaces. The concentration of 70% alcohol is considered ideal because it contains enough water to slow down the evaporation rate, allowing the alcohol to penetrate the cell walls of bacteria and viruses effectively. This concentration also provides a good balance of active ingredient and moisture, maximizing its ability to kill pathogens while minimizing the risk of damaging the needle. Other options, such as 50% alcohol, do not provide sufficient antimicrobial action due to the lower concentration of alcohol, which can result in ineffective disinfection. Pure water lacks any disinfecting properties and would not effectively clean or sterilize the needle. An antiseptic solution may be effective, but it could contain additional substances that might not be suitable for direct use on electrolysis needles, potentially leaving residue. Thus, 70% alcohol is the preferred choice for ensuring that the needles are properly cleaned and prepared for sterilization.