Which of the following is NOT a requirement for disinfection techniques?

The correct answer is C, as using heated instruments is not a requirement for disinfection techniques. Disinfection focuses primarily on reducing the number of pathogenic microorganisms to a safe level, typically using chemical agents designed for that purpose.

The requirement to utilize EPA-registered products ensures that the disinfectants used are effective against a wide range of pathogens and have been proven safe for use in a salon environment. Similarly, allowing proper contact time is critical to ensure that the disinfectant has enough opportunity to work effectively against the microorganisms. Additionally, cleaning surfaces before disinfecting is essential because any dirt or organic matter can impede the effectiveness of the disinfectant.

Using heated instruments may assist in sanitization or sterilization, but it is not a standard disinfection technique and can sometimes lead to damage or alteration of the tools. Therefore, it does not fit within the core requirements for disinfection practices in nail technology.