The screening material for medical-surgical vacuum exhaust shall be fabricated using which material type?

• A. steel mesh
• B. steel wire
• C. any non-corroding material
• D. all of the above

Answer: (C)

In medical-surgical vacuum exhaust, the screening material must resist corrosion because it will be exposed to moisture, cleaning agents, and possibly sterilants during routine disinfection and use. If the screen corrodes, it can shed particles or weaken and clog the exhaust path, compromising safety and system performance. That’s why the best choice is any non-corroding material—materials such as stainless steel or certain corrosion-resistant plastics or alloys can be used, as they maintain integrity and cleanliness over time. Steel that isn’t specified as corrosion-resistant can rust, so it isn’t a guaranteed safe option. The option stating all of the above isn’t correct because not every steel form is non-corroding unless it’s specifically identified as corrosion-resistant.