Micronic-type filters can use which materials?

• A. Paper filters must be replaced.
• B. Metal filters can be cleaned and reused.
• C. Both A and B are true.
• D. Neither A nor B is true.

Answer: (C)

Micronic filters come in different media, and the way they’re serviced depends on that material. Paper filters are designed for one-time use; once they’ve trapped particles or become contaminated, they’re simply discarded and replaced. Metal filters use durable media like stainless steel and can be cleaned to remove debris and then reused, as long as they’re inspected for wear and the pore structure remains intact. Because both disposable paper types and reusable metal types exist in micronic filtration, both approaches are valid options. The best choice acknowledges that you can have either material, depending on the application and maintenance practices.