Page 1 of 21
NAFA CAFS Exam | 130 Real and Verified Questions
with Correct Answers | Certified Air Filter Specialist
Practice Test | A+ Graded
What are the 3 types of media used in contaminate control
......ANSWER........Active carbon, chemically treated carbon,
potassium permanganate
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
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
,Page 2 of 21
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
What is Capacity ......ANSWER........The amount the media is
capable of removing - this determines the life of the filter
What are two types of filter options ......ANSWER........partial
bypass, total retention
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
How many classifications of air is there? ......ANSWER........4
What are the IAQ testing applications
......ANSWER........Particulate contaminants, Gas phase, systems
integrity, comfort parameters
, Page 3 of 21
What are the control strategies ......ANSWER........Filtration,
source removal, Dilution
Min demonstrated overspray filter eff must be at least
......ANSWER........98%
What is the min eff for a Super ULPA
......ANSWER........99.9999% on MPPS
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
What are the types of Microorganisms ......ANSWER........Virus,
Bacteria, Fungi
A baghouse is composed of ......ANSWER........house, hoppers,
tubesheet and plenum
NAFA CAFS Exam | 130 Real and Verified Questions
with Correct Answers | Certified Air Filter Specialist
Practice Test | A+ Graded
What are the 3 types of media used in contaminate control
......ANSWER........Active carbon, chemically treated carbon,
potassium permanganate
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
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
,Page 2 of 21
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
What is Capacity ......ANSWER........The amount the media is
capable of removing - this determines the life of the filter
What are two types of filter options ......ANSWER........partial
bypass, total retention
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
How many classifications of air is there? ......ANSWER........4
What are the IAQ testing applications
......ANSWER........Particulate contaminants, Gas phase, systems
integrity, comfort parameters
, Page 3 of 21
What are the control strategies ......ANSWER........Filtration,
source removal, Dilution
Min demonstrated overspray filter eff must be at least
......ANSWER........98%
What is the min eff for a Super ULPA
......ANSWER........99.9999% on MPPS
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
What are the types of Microorganisms ......ANSWER........Virus,
Bacteria, Fungi
A baghouse is composed of ......ANSWER........house, hoppers,
tubesheet and plenum
