NAFA CAFS TEST EXAM FULLY SOLVED & UPDATED 2026 (LATEST VERSION
VERIFIED FOR ACCURACY)/NEWEST UPDATE!!!
What are the 3 types of media used in contaminate control - (Correct Answer)-Active carbon,
chemically treated carbon, potassium permanganate
What is residence time? - (Correct 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
What are the variations of the contamination control principle - (Correct 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
What is removal efficiency - (Correct Answer)-The fraction of the contaminate that once in
contact with the media is removed by either physical or chemical means
What is Capacity - (Correct Answer)-The amount the media is capable of removing - this
determines the life of the filter
What are two types of filter options - (Correct Answer)-partial bypass, total retention
What is the ASHRAE standard 62.1/62.2 - (Correct 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
How many classifications of air is there? - (Correct Answer)-4
What are the IAQ testing applications - (Correct Answer)-Particulate contaminants, Gas phase,
systems integrity, comfort parameters
What are the control strategies - (Correct Answer)-Filtration, source removal, Dilution
Min demonstrated overspray filter eff must be at least - (Correct Answer)-98%
, 2
What is the min eff for a Super ULPA - (Correct Answer)-99.9999% on MPPS
What are the factors affecting ESP design and efficiency - (Correct Answer)-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 - (Correct Answer)-Virus, Bacteria, Fungi
A baghouse is composed of - (Correct Answer)-house, hoppers, tubesheet and plenum
A typical oil mist electrostatic presipitator has what sections (inlet to outlet) - (Correct Answer)-
Baffle, ionizer, collecting, fan and optional after filter
PCO has how many types of reactor configurations - (Correct Answer)-4
In the filter industry, a manometer is used to measure what? - (Correct Answer)-Pressure drop
across the filter
Airflow through a booth must be? - (Correct Answer)-high enough to keep the concentration of
VOC vapor below 25% of its lowest explosive limit
ULPA stands for? - (Correct Answer)-Ultimate low penetration Air Filter
Name the components of a HEPA filter - (Correct Answer)-Media, separators, filter pack, sealant,
framing, gasketing
What size particles behave like a gas, have negligible settling rates and are affected by Brownian
Motion - (Correct Answer)-Particals less than .1 microns
VERIFIED FOR ACCURACY)/NEWEST UPDATE!!!
What are the 3 types of media used in contaminate control - (Correct Answer)-Active carbon,
chemically treated carbon, potassium permanganate
What is residence time? - (Correct 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
What are the variations of the contamination control principle - (Correct 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
What is removal efficiency - (Correct Answer)-The fraction of the contaminate that once in
contact with the media is removed by either physical or chemical means
What is Capacity - (Correct Answer)-The amount the media is capable of removing - this
determines the life of the filter
What are two types of filter options - (Correct Answer)-partial bypass, total retention
What is the ASHRAE standard 62.1/62.2 - (Correct 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
How many classifications of air is there? - (Correct Answer)-4
What are the IAQ testing applications - (Correct Answer)-Particulate contaminants, Gas phase,
systems integrity, comfort parameters
What are the control strategies - (Correct Answer)-Filtration, source removal, Dilution
Min demonstrated overspray filter eff must be at least - (Correct Answer)-98%
, 2
What is the min eff for a Super ULPA - (Correct Answer)-99.9999% on MPPS
What are the factors affecting ESP design and efficiency - (Correct Answer)-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 - (Correct Answer)-Virus, Bacteria, Fungi
A baghouse is composed of - (Correct Answer)-house, hoppers, tubesheet and plenum
A typical oil mist electrostatic presipitator has what sections (inlet to outlet) - (Correct Answer)-
Baffle, ionizer, collecting, fan and optional after filter
PCO has how many types of reactor configurations - (Correct Answer)-4
In the filter industry, a manometer is used to measure what? - (Correct Answer)-Pressure drop
across the filter
Airflow through a booth must be? - (Correct Answer)-high enough to keep the concentration of
VOC vapor below 25% of its lowest explosive limit
ULPA stands for? - (Correct Answer)-Ultimate low penetration Air Filter
Name the components of a HEPA filter - (Correct Answer)-Media, separators, filter pack, sealant,
framing, gasketing
What size particles behave like a gas, have negligible settling rates and are affected by Brownian
Motion - (Correct Answer)-Particals less than .1 microns
