NAFA CAFS /EXAM / QUESTIONS &
EXPERTLY VERIFIED ANSWERS, 2025 /
2026.
Quiz____?
What are the 3 types of media used in contaminate control -
Answer✓✓
Active carbon, chemically treated carbon, potassium permanganate
Quiz____?
What is residence time? -
Answer✓✓
the time it takes air to cross a distance equal to the thickness of the filter without
accounting for the resistance of the media through which it travels
Quiz____?
What are the variations of the contamination control principle -
Answer✓✓
clean the air required by the process, blanket the product with cleaned air, offer enough air
flow to move contaminated air away from the product
Quiz____?
What is removal efficiency -
Answer✓✓
The fraction of the contaminate that once in contact with the media is removed by either
physical or chemical means
1
, Quiz____?
What is Capacity -
Answer✓✓
The amount the media is capable of removing - this determines the life of the filter
Quiz____?
What are two types of filter options -
Answer✓✓
partial bypass, total retention
Quiz____?
What is the ASHRAE standard 62.1/62.2 -
Answer✓✓
Ventilation for acceptable indoor air quality to specific minimum ventilation rates IAQ which
will be acceptable to humans and are intended to avoid adverse health effects
Quiz____?
How many classifications of air is there? -
Answer✓✓
4
Quiz____?
What are the IAQ testing applications -
2
, Answer✓✓
Particulate contaminants, Gas phase, systems integrity, comfort parameters
Quiz____?
What are the control strategies -
Answer✓✓
Filtration, source removal, Dilution
Quiz____?
Min demonstrated overspray filter eff must be at least -
Answer✓✓
98%
Quiz____?
What is the min eff for a Super ULPA -
Answer✓✓
99.9999% on MPPS
Quiz____?
What are the factors affecting ESP design and efficiency -
Answer✓✓
partical size, velocity through filter, voltage on ionizer and collector, collector plate spacing,
collector plate loading, ionizer spacing and ozone
3
EXPERTLY VERIFIED ANSWERS, 2025 /
2026.
Quiz____?
What are the 3 types of media used in contaminate control -
Answer✓✓
Active carbon, chemically treated carbon, potassium permanganate
Quiz____?
What is residence time? -
Answer✓✓
the time it takes air to cross a distance equal to the thickness of the filter without
accounting for the resistance of the media through which it travels
Quiz____?
What are the variations of the contamination control principle -
Answer✓✓
clean the air required by the process, blanket the product with cleaned air, offer enough air
flow to move contaminated air away from the product
Quiz____?
What is removal efficiency -
Answer✓✓
The fraction of the contaminate that once in contact with the media is removed by either
physical or chemical means
1
, Quiz____?
What is Capacity -
Answer✓✓
The amount the media is capable of removing - this determines the life of the filter
Quiz____?
What are two types of filter options -
Answer✓✓
partial bypass, total retention
Quiz____?
What is the ASHRAE standard 62.1/62.2 -
Answer✓✓
Ventilation for acceptable indoor air quality to specific minimum ventilation rates IAQ which
will be acceptable to humans and are intended to avoid adverse health effects
Quiz____?
How many classifications of air is there? -
Answer✓✓
4
Quiz____?
What are the IAQ testing applications -
2
, Answer✓✓
Particulate contaminants, Gas phase, systems integrity, comfort parameters
Quiz____?
What are the control strategies -
Answer✓✓
Filtration, source removal, Dilution
Quiz____?
Min demonstrated overspray filter eff must be at least -
Answer✓✓
98%
Quiz____?
What is the min eff for a Super ULPA -
Answer✓✓
99.9999% on MPPS
Quiz____?
What are the factors affecting ESP design and efficiency -
Answer✓✓
partical size, velocity through filter, voltage on ionizer and collector, collector plate spacing,
collector plate loading, ionizer spacing and ozone
3
