Which item listed cannot be disinfected during nail treatments?

During nail treatments, an emery board is a disposable item that cannot be disinfected. This is because emery boards are typically made from porous materials that can harbor bacteria, fungi, and other pathogens. Once they are used, they cannot be adequately cleaned or sterilized to remove these contaminants. It is essential for nail technicians to maintain a hygienic environment, and using disposable items like emery boards helps to prevent the spread of infections.

In contrast, metal files, nail clippers, and glass files can be disinfected. Metal files and nail clippers are made from non-porous materials, allowing for effective cleaning and disinfection after use. Glass files are also non-porous and can be sterilized without any degradation in their quality, making them safe for reuse. Understanding the difference between disposable and reusable items is crucial for maintaining proper hygiene in nail care practices.