Decontamination Summary Flashcards
What type of water can be used for manual cleaning ?
Tap water.
What type of water can be used in ultrasonic bath ?
Tap water.
What type of water can be used in cleaning stages of AWD ?
Tap water.
What type of water should be used for thermal disinfection during AWD cycle ?
Water with conductivity lower than <30ms recommended.
What type of water should be used for sterilisation ?
Purified water.
What temperature should water be for manual cleaning ?
<35 degrees.
What water temperature should be used for ultrasonic bath cleaning ?
<35 degrees.
What water temperature should be used for AWD cleaning stage ?
Depends on chemical manufacturers instructions - usually <65 degrees.
What water temperature should be used for thermal disinfection stage of AWD ?
90-95 degrees.
What water temperature should be used for sterilisation ?
134-137 degrees.
What is the most common cycle time for ultrasonic bath ?
20 mins - depends on validated cycle time.
What is the most common cycle time for AWD cleaning stage ?
55 mins - depends on validated cycle time.
What is the minimum time for thermal disinfection ?
Hold time of 1 min.
What is the minimum time for sterilisation ?
Hold time of 3 mins.
What type of chemical should be used for manual washing ?
pH neutral or enzymatic detergent.
What type of chemical should be used for ultrasonic bath ?
pH neutral or enzymatic detergent.
What type of chemical should be used for cleaning stage of AWD ?
Low alkaline or high alkaline detergent.
Should chemicals be used during thermal disinfection ?
No.
Should chemicals be used during sterilisation ?
No.
What type of energy is used in manual cleaning ?
Scrubbing with brush or cloth.
What type of energy is used in ultrasonic bath ?
Ultrasonic sound waves.
What type of energy is used in cleaning stage of AWD ?
Water jet/spray.
What type of energy is used in thermal disinfection ?
Water jet/spray.
DWhat type of energy is used in sterilisation ?
Steam heat energy.
What are the 3 requirements for transportation container of contaminated instruments ?
Rigid sided with tight fitting lid.
Leak proof.
Colour coded - waste streams.
What instrument can be used for inspection of instruments ?
Light magnifier.
What are the 4 elements to Sinner circle ? And what does it represent ?
4 elements required in successful cleaning process.
Temperature - between 20-30 degrees.
Energy.
Chemical.
Time - <20 mins.
How is distilled water produced ?
Boiling and recondensing standard tap water.
How is de-ionised water produced ?
Passing water through ion exchange, picks up sodium, calcium, potassium etc.
What is reverse osmosis ?
Where semi-permeable membrane is used to filter water.
What is the conductivity of tap water ?
56.8 microseimens.
What is the conductivity of purified water ?
4.3 microsiemens.
When is enzymatic detergent used ? Explain its action.
Breaks down proteins into smaller particles.
Used in ultrasonic and manual washing.
When is pH neutral detergents used ? Why ?
Used for manual washing and in AWD if processing handpieces.
Less damage to handpieces and less harmful to operator skin.
