What color should the humidity indicator dot be to show the PBE is usable?

What color should the humidity indicator dot be to show the PBE is usable?

• A. Pink
• B. Green
• C. Yellow
• D. Blue

Answer: (D)

Humidity indicator dots show whether the PBE has stayed within its approved humidity range. When the dot is blue, it means the internal humidity is within acceptable limits and the PBE is considered usable. If the dot turns pink, the humidity has exceeded the limit, indicating the unit may not function as designed and should not be used. Green or yellow are not the standard colors that indicate usability on this indicator, so they do not confirm readiness.

Humidity indicator dots show whether the PBE has stayed within its approved humidity range. When the dot is blue, it means the internal humidity is within acceptable limits and the PBE is considered usable. If the dot turns pink, the humidity has exceeded the limit, indicating the unit may not function as designed and should not be used. Green or yellow are not the standard colors that indicate usability on this indicator, so they do not confirm readiness.