What does an APR do?

• Eliminates all contaminants

• Reduces exposure by filtering airborne contaminants

• Eliminates exposure by blocking gases

• Reduces exposure by blocking all contaminants

What are two types of media used in filters?

• Particulate filter

• cloth material

• mesh screens

• Vapor and gas cartridges

Filter ratings are based upon ________in capturing particulate matter and __________ to oil-based mists.

• resistance/blocking

• efficiency/standing up

• efficiency/resistance

• ability/resistance

A 95 rating is for filters that are ______ % efficient

• 95

• 100

• 99

• 96

A 100 rating is for filters that are _________% efficient

• 100

• 110

• 101

• 99.97

In Ratings for resistance to oil, an "N" stands for:

• Not resistant to oil

• Never resistant to oil

• Newly resistant to oil

The two types of atmosphere-supplying respirators are:

• Non-suppling air respirators (NSAR)

• Supplied-air respirators (SARs)

• Self-operated breathing apparatus (SOBA)

• Self-contained breathing apparatus (SCBA)

What are the two limitations of PAPRs?

• Batteries that are overly strong

• There can be an increase in positive pressure

• Weak batteries

• Under heavy work conditions you can use more air

What are the limitations of air-supplying respirators?

• They restrict the worker's movement

• Air lines are vulnerable to damage

• Bubbles can form in the lines killing the worker

• The compressor intake must be in a safe location away from contaminants

SCBAs have these two limitations

• Color coding

• Time

• Weight

• Height