NAFA CAFS EXAM STUDY GUIDE
QUESTIONS AND CORRECT
SOLUTIONS||100% GUARANTEED
PASS||UPDATED 2026\2027
SYLLABUS||A+ GRADED||<<RECENT
VERSION>>
What are the styles of Dust Separation equipment - ANSWER ✓ cyclone, shaker,
reverse pulse, jet pulse
What are the different types of air cleaners - ANSWER ✓ media, electronic,
agglomorators
what is the minimum efficiency for ULPA - ANSWER ✓ 99.999% on .1 to .2
microns
What are the two types of cleanroom filters - ANSWER ✓ roomoside replaceable
ceiling module, fan powered module
Removal of dust on an elctronic air cleaner is done how - ANSWER ✓ washed
off, if it has agglomerated it can be blown off
Lofted glass media can be found most often in what style filter - ANSWER ✓
Pocket or rigid
What is final resistance - ANSWER ✓ pressure at which the filter would be
considered fully loaded
how do mechanical filters remove dust - ANSWER ✓ capturing on media
Why can't electronic air cleaners be tested for loading using the ASHRAE 52.2
test - ANSWER ✓ carbon in the dust shorts out the electrical connections
, VOC - ANSWER ✓ Volatile organic compound
MPPS - ANSWER ✓ Most penetrating particulate size
what are the factors that affect filter life - ANSWER ✓ partical size,
underrating/overrating
What is Chemisorption - ANSWER ✓ the result of chemical reactions on and in
the surface of the absorbent
What is the optimum final pressure drop - ANSWER ✓ the point where the sum
of power cost & filter cost is at a minimum
What is the total cost of filtration - ANSWER ✓ the sum of all first cost that can
be depreciated..plus the sum of the annual operating cost
UVGI - ANSWER ✓ Ultraviolet Germicidal Irradiation
How does UVGI work? - ANSWER ✓ The DNA of the micro organisms absorb
the UVGI energy - this breaks the DNA strand
What are the types of PCO reactors - ANSWER ✓ coated wall annular design,
packed bed, flat bed, box reactors
Why capture aerosolized metal working fluids - ANSWER ✓ hazardous to
people, may damage equip and facility, may be illegal to exhaust outside, can be
reused
What are the types of metal working fluids - ANSWER ✓ semi synthetic,
synthetic, straight, soluble
mist and smoke removal is done with what type of filters - ANSWER ✓ media,
centrifugal, electrostatic
What are the Merv rating/color coded of lofted microglass media - ANSWER ✓
yellow=14, Pink=13, orange=11, tan 50=9
QUESTIONS AND CORRECT
SOLUTIONS||100% GUARANTEED
PASS||UPDATED 2026\2027
SYLLABUS||A+ GRADED||<<RECENT
VERSION>>
What are the styles of Dust Separation equipment - ANSWER ✓ cyclone, shaker,
reverse pulse, jet pulse
What are the different types of air cleaners - ANSWER ✓ media, electronic,
agglomorators
what is the minimum efficiency for ULPA - ANSWER ✓ 99.999% on .1 to .2
microns
What are the two types of cleanroom filters - ANSWER ✓ roomoside replaceable
ceiling module, fan powered module
Removal of dust on an elctronic air cleaner is done how - ANSWER ✓ washed
off, if it has agglomerated it can be blown off
Lofted glass media can be found most often in what style filter - ANSWER ✓
Pocket or rigid
What is final resistance - ANSWER ✓ pressure at which the filter would be
considered fully loaded
how do mechanical filters remove dust - ANSWER ✓ capturing on media
Why can't electronic air cleaners be tested for loading using the ASHRAE 52.2
test - ANSWER ✓ carbon in the dust shorts out the electrical connections
, VOC - ANSWER ✓ Volatile organic compound
MPPS - ANSWER ✓ Most penetrating particulate size
what are the factors that affect filter life - ANSWER ✓ partical size,
underrating/overrating
What is Chemisorption - ANSWER ✓ the result of chemical reactions on and in
the surface of the absorbent
What is the optimum final pressure drop - ANSWER ✓ the point where the sum
of power cost & filter cost is at a minimum
What is the total cost of filtration - ANSWER ✓ the sum of all first cost that can
be depreciated..plus the sum of the annual operating cost
UVGI - ANSWER ✓ Ultraviolet Germicidal Irradiation
How does UVGI work? - ANSWER ✓ The DNA of the micro organisms absorb
the UVGI energy - this breaks the DNA strand
What are the types of PCO reactors - ANSWER ✓ coated wall annular design,
packed bed, flat bed, box reactors
Why capture aerosolized metal working fluids - ANSWER ✓ hazardous to
people, may damage equip and facility, may be illegal to exhaust outside, can be
reused
What are the types of metal working fluids - ANSWER ✓ semi synthetic,
synthetic, straight, soluble
mist and smoke removal is done with what type of filters - ANSWER ✓ media,
centrifugal, electrostatic
What are the Merv rating/color coded of lofted microglass media - ANSWER ✓
yellow=14, Pink=13, orange=11, tan 50=9
