On fixed contamination, which statement is true?

On fixed contamination, which statement is true?

• A. Contamination in air
• B. Contamination is attached to surfaces and does not readily transfer
• C. Contamination easily wipes away
• D. Contamination consists of discrete particles

Answer: (B)

Fixed contamination means the contaminant is bound to a surface and not readily transfer to hands or clothing during normal handling. This is the key idea because it distinguishes fixed contamination from contaminants that are airborne or easily wiped away. If the contamination were in the air, it wouldn’t be on a surface at all. If it could be easily wiped off, that would describe removable contamination, not fixed. And fixed contamination isn’t limited to discrete particles—it can appear as a film or smear that remains attached to a surface.

Fixed contamination means the contaminant is bound to a surface and not readily transfer to hands or clothing during normal handling. This is the key idea because it distinguishes fixed contamination from contaminants that are airborne or easily wiped away. If the contamination were in the air, it wouldn’t be on a surface at all. If it could be easily wiped off, that would describe removable contamination, not fixed. And fixed contamination isn’t limited to discrete particles—it can appear as a film or smear that remains attached to a surface.