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N. 43 - Available microbial air samplers for airborne microorganisms.

The USP 38 – The United States Pharmacopeial Document – Official from May 1, 2015 – presents on page 1200 the list of the most commonly used tools for monitoring aseptic environments. SLIT-TO-AGAR AIR (STA) The unit is powered by an attached source of controllable vacuum. The air intake is obtained through a standardized slit below which is placed a slowly revolving Petri dish that contains a nutrient agar. Airborne particles that have sufficient mass impact the agar surface, and viable microorganisms are allowed to grow. A remote air intake is often used to minimize disturbance of unidirectional airflow.

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