PTCB Certified Pharmacy Technician (PTCE)MedicationsEasy
A pharmacy technician is preparing a sterile intravenous solution in a laminar airflow workbench. Which of the following components of the workbench is primarily responsible for removing particulate contaminants from the air?
- AHEPA filter
- BWork surface
- CBlower motor
- DPrefilter
Show answer & explanationAnswer & explanation
Correct answer: A. HEPA filter
The HEPA filter is the critical component in a laminar airflow workbench responsible for filtering out airborne particulate contaminants, ensuring a sterile environment for compounding.
Why the other options are wrong
- B. The work surface is where compounding takes place and does not filter the air.
- C. The blower motor creates the airflow but does not filter the air itself.
- D. The prefilter removes larger particles but is not the primary filter for sterile air.
HEPA Filter
A High-Efficiency Particulate Air (HEPA) filter is a type of mechanical air filter that works by forcing air through a fine mesh that traps harmful particles such as pollen, pet dander, dust mites, and smoke.
- Removes 99.97% of particles 0.3 micrometers or larger.
- Essential for maintaining sterility in laminar airflow workbenches.
- Requires regular testing and replacement to ensure efficacy.
Memory trick: LAFW's Clean Air is HEPA's Best Friend