NAFA CAFS TEST EXAM FULLY SOLVED &
UPDATED 2026 (LATEST VERSION
VERIFIED FOR ACCURACY) LATEST!!||
GRADED A+|| NEWEST!!
What are the 3 types of media used in contaminate control -CORRECTANSWER Active
carbon, chemically treated carbon, potassium permanganate
What is residence time? -CORRECTANSWER 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
What are the variations of the contamination control principle -CORRECTANSWER
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
What is removal efficiency -CORRECTANSWER The fraction of the contaminate that
once in contact with the media is removed by either physical or chemical means
What is Capacity -CORRECTANSWER The amount the media is capable of removing -
this determines the life of the filter
What are two types of filter options -CORRECTANSWER partial bypass, total retention
,What is the ASHRAE standard 62.1/62.2 -CORRECTANSWER 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
How many classifications of air is there? -CORRECTANSWER 4
What are the IAQ testing applications -CORRECTANSWER Particulate contaminants,
Gas phase, systems integrity, comfort parameters
What are the control strategies -CORRECTANSWER Filtration, source removal,
Dilution
Min demonstrated overspray filter eff must be at least -CORRECTANSWER 98%
What is the min eff for a Super ULPA -CORRECTANSWER 99.9999% on MPPS
What are the factors affecting ESP design and efficiency -CORRECTANSWER partical
size, velocity through filter, voltage on ionizer and collector, collector plate spacing,
collector plate loading, ionizer spacing and ozone
What are the types of Microorganisms -CORRECTANSWER Virus, Bacteria, Fungi
, A baghouse is composed of -CORRECTANSWER house, hoppers, tubesheet and
plenum
A typical oil mist electrostatic presipitator has what sections (inlet to outlet) -
CORRECTANSWER Baffle, ionizer, collecting, fan and optional after filter
PCO has how many types of reactor configurations -CORRECTANSWER 4
In the filter industry, a manometer is used to measure what? -CORRECTANSWER
Pressure drop across the filter
Airflow through a booth must be? -CORRECTANSWER high enough to keep the
concentration of VOC vapor below 25% of its lowest explosive limit
ULPA stands for? -CORRECTANSWER Ultimate low penetration Air Filter
Name the components of a HEPA filter -CORRECTANSWER Media, separators, filter
pack, sealant, framing, gasketing
What size particles behave like a gas, have negligible settling rates and are affected by
Brownian Motion -CORRECTANSWER Particals less than .1 microns
UPDATED 2026 (LATEST VERSION
VERIFIED FOR ACCURACY) LATEST!!||
GRADED A+|| NEWEST!!
What are the 3 types of media used in contaminate control -CORRECTANSWER Active
carbon, chemically treated carbon, potassium permanganate
What is residence time? -CORRECTANSWER 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
What are the variations of the contamination control principle -CORRECTANSWER
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
What is removal efficiency -CORRECTANSWER The fraction of the contaminate that
once in contact with the media is removed by either physical or chemical means
What is Capacity -CORRECTANSWER The amount the media is capable of removing -
this determines the life of the filter
What are two types of filter options -CORRECTANSWER partial bypass, total retention
,What is the ASHRAE standard 62.1/62.2 -CORRECTANSWER 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
How many classifications of air is there? -CORRECTANSWER 4
What are the IAQ testing applications -CORRECTANSWER Particulate contaminants,
Gas phase, systems integrity, comfort parameters
What are the control strategies -CORRECTANSWER Filtration, source removal,
Dilution
Min demonstrated overspray filter eff must be at least -CORRECTANSWER 98%
What is the min eff for a Super ULPA -CORRECTANSWER 99.9999% on MPPS
What are the factors affecting ESP design and efficiency -CORRECTANSWER partical
size, velocity through filter, voltage on ionizer and collector, collector plate spacing,
collector plate loading, ionizer spacing and ozone
What are the types of Microorganisms -CORRECTANSWER Virus, Bacteria, Fungi
, A baghouse is composed of -CORRECTANSWER house, hoppers, tubesheet and
plenum
A typical oil mist electrostatic presipitator has what sections (inlet to outlet) -
CORRECTANSWER Baffle, ionizer, collecting, fan and optional after filter
PCO has how many types of reactor configurations -CORRECTANSWER 4
In the filter industry, a manometer is used to measure what? -CORRECTANSWER
Pressure drop across the filter
Airflow through a booth must be? -CORRECTANSWER high enough to keep the
concentration of VOC vapor below 25% of its lowest explosive limit
ULPA stands for? -CORRECTANSWER Ultimate low penetration Air Filter
Name the components of a HEPA filter -CORRECTANSWER Media, separators, filter
pack, sealant, framing, gasketing
What size particles behave like a gas, have negligible settling rates and are affected by
Brownian Motion -CORRECTANSWER Particals less than .1 microns
