NAFA CERTIFIED AIR FILTER SPECIALIST
EXAMINATION 2026/2027 ACTUAL EXAM COMPLETE
QUESTIONS AND VERIFIED SOLUTIONS |BRAND
NEW!!
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
,The velocity of the air through any one square foot of
media in an extended surface filter is called? - ANSWER-
Media velocity
What percent of the total cost of a filter is energy cost? -
ANSWER-81%
UVGI is most effective on micro organism in what range of
the light spectrum - ANSWER-200 to 280 nanometers
What are vapors? - ANSWER-Gases formed by
evaporation of materials that are normally a liquid or solid
,What are the principles of air flow? - ANSWER-Quantity of
Air(Q) the velocity of air (V)and the area of the filter (A)
What is pressure drop? - ANSWER-the resistance a filter
adds to the system
What are the principles of Particulate Air Filtration -
ANSWER-Mechanical, electrostatically charged media,
electronic air cleaners
What is Diffusion? - ANSWER-explains the capture of very
small particles (Brownian Motion - the erratic path taken
by very small particles because they are bombarded by
, other particles) This erratic path ncreases the probability
that the particles will come into contact with the fibers
Dust separation is used for two objectives? - ANSWER-
Recover valuable product from plant processes that
generate dust 2. Clean air to stay in compliance with
OSHA and EPA requirements
What is Aerosol? - ANSWER-An assemblage of small
particles, solid or liquid suspended in air
What is Absorption? - ANSWER-the process by which a
liquid or a gas is taken into the interstices of a porous
substance and held there
EXAMINATION 2026/2027 ACTUAL EXAM COMPLETE
QUESTIONS AND VERIFIED SOLUTIONS |BRAND
NEW!!
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
,The velocity of the air through any one square foot of
media in an extended surface filter is called? - ANSWER-
Media velocity
What percent of the total cost of a filter is energy cost? -
ANSWER-81%
UVGI is most effective on micro organism in what range of
the light spectrum - ANSWER-200 to 280 nanometers
What are vapors? - ANSWER-Gases formed by
evaporation of materials that are normally a liquid or solid
,What are the principles of air flow? - ANSWER-Quantity of
Air(Q) the velocity of air (V)and the area of the filter (A)
What is pressure drop? - ANSWER-the resistance a filter
adds to the system
What are the principles of Particulate Air Filtration -
ANSWER-Mechanical, electrostatically charged media,
electronic air cleaners
What is Diffusion? - ANSWER-explains the capture of very
small particles (Brownian Motion - the erratic path taken
by very small particles because they are bombarded by
, other particles) This erratic path ncreases the probability
that the particles will come into contact with the fibers
Dust separation is used for two objectives? - ANSWER-
Recover valuable product from plant processes that
generate dust 2. Clean air to stay in compliance with
OSHA and EPA requirements
What is Aerosol? - ANSWER-An assemblage of small
particles, solid or liquid suspended in air
What is Absorption? - ANSWER-the process by which a
liquid or a gas is taken into the interstices of a porous
substance and held there
