Page |1
HSPA CRCST FINAL EXAM AND PRACTICE EXAM 2025/2026
NEWEST ACTUAL EXAM WITH COMPLETE QUESTIONS AND
VERIFIED ANSWERS |ALREADY GRADED A+|
What is instrument air? (Has to be oil free, and contaminant free)
-ANSWERS-Compressed air with no dust no dirt used to dry
medial equipment (instruments)
What are types of mechanical cleaning in decontamination? -
ANSWERS-Ultrasonics, irrigating sonics, washer-disinfectors, cart
washers, pasteurizers, and automated endoscope reprocessors
What does AER stand for? -ANSWERS-Automatic Endoscope
Reprocessor (AER)
What are ultrasonic cleaners used for? -ANSWERS-Fine cleaning
not disinfecting or sterilization
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What temperature should ultrasonic cleaner be? -ANSWERS-80F
to 109F never 140f because it will coagulate proteins making
more difficult to clean
When should water be changed? -ANSWERS-When it is visibly
soiled
What is the ultrasonic cleaner? -ANSWERS-It helps get rid of
small hard to reach stuff in lumens by using gas bubbles
It is important to do what to the instruments after used by the
ultrasonic? -ANSWERS-Rinse them off
What are irrigation sonics used for? -ANSWERS-Laparoscopic or
robotic instruments
Washers-disinfectors are not made to wash _____ unless stated
otherwise in IFU? -ANSWERS-Batteries and pneumatic devices
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The spray-force action of pressurized water against instruments
being processed to physically remove bioburden. -ANSWERS-
Impingement
What are the cycles of the washer? -ANSWERS-Gentle,
orthopedic instrument, and glass as well as regular instrument
cycle
What are the steps the washer uses? -ANSWERS-1. Cool pre-
rinse (cold water or enzymatic solution)
2. detergent cycle- detergent and hot water
3. Rinsing- (water-lubricant )
What type of detergents are used for ultrasonic? -ANSWERS-
Only detergents that have been specifically formulated for
ultrasonic
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Hinged instruments in a washer-disinfector should be? -
ANSWERS-Opened
Washer racks should never be? -ANSWERS-Overloaded
Trays with multiple sets should be___while going in the washer? -
ANSWERS-Opened and each tray should be placed separately
Instrument washer racks and conveyor systems should be
inspected how often? -ANSWERS-Daily
Why is it important to change detergent frequently? -ANSWERS-
Because air can get into the feed lines and prevent detergent
from flowing
If white scale is seen on washing chamber what should you do? -
ANSWERS-Remove right away
What should be provided to a CS technician about the washers? -
ANSWERS-Operator manual
HSPA CRCST FINAL EXAM AND PRACTICE EXAM 2025/2026
NEWEST ACTUAL EXAM WITH COMPLETE QUESTIONS AND
VERIFIED ANSWERS |ALREADY GRADED A+|
What is instrument air? (Has to be oil free, and contaminant free)
-ANSWERS-Compressed air with no dust no dirt used to dry
medial equipment (instruments)
What are types of mechanical cleaning in decontamination? -
ANSWERS-Ultrasonics, irrigating sonics, washer-disinfectors, cart
washers, pasteurizers, and automated endoscope reprocessors
What does AER stand for? -ANSWERS-Automatic Endoscope
Reprocessor (AER)
What are ultrasonic cleaners used for? -ANSWERS-Fine cleaning
not disinfecting or sterilization
, Page |2
What temperature should ultrasonic cleaner be? -ANSWERS-80F
to 109F never 140f because it will coagulate proteins making
more difficult to clean
When should water be changed? -ANSWERS-When it is visibly
soiled
What is the ultrasonic cleaner? -ANSWERS-It helps get rid of
small hard to reach stuff in lumens by using gas bubbles
It is important to do what to the instruments after used by the
ultrasonic? -ANSWERS-Rinse them off
What are irrigation sonics used for? -ANSWERS-Laparoscopic or
robotic instruments
Washers-disinfectors are not made to wash _____ unless stated
otherwise in IFU? -ANSWERS-Batteries and pneumatic devices
, Page |3
The spray-force action of pressurized water against instruments
being processed to physically remove bioburden. -ANSWERS-
Impingement
What are the cycles of the washer? -ANSWERS-Gentle,
orthopedic instrument, and glass as well as regular instrument
cycle
What are the steps the washer uses? -ANSWERS-1. Cool pre-
rinse (cold water or enzymatic solution)
2. detergent cycle- detergent and hot water
3. Rinsing- (water-lubricant )
What type of detergents are used for ultrasonic? -ANSWERS-
Only detergents that have been specifically formulated for
ultrasonic
, Page |4
Hinged instruments in a washer-disinfector should be? -
ANSWERS-Opened
Washer racks should never be? -ANSWERS-Overloaded
Trays with multiple sets should be___while going in the washer? -
ANSWERS-Opened and each tray should be placed separately
Instrument washer racks and conveyor systems should be
inspected how often? -ANSWERS-Daily
Why is it important to change detergent frequently? -ANSWERS-
Because air can get into the feed lines and prevent detergent
from flowing
If white scale is seen on washing chamber what should you do? -
ANSWERS-Remove right away
What should be provided to a CS technician about the washers? -
ANSWERS-Operator manual
