What is the air change per hour (APCH) in an ante room classified as ISO 8?

The air change per hour (ACH) in an ante room classified as ISO 8 is indeed 20 per hour. This classification is essential in maintaining appropriate air quality and cleanliness standards within environments where sterile compounding occurs. ISO 8 is a less stringent standard compared to lower-level classifications, which specify higher ACH rates to maintain lower particulate levels.

The requirement of 20 air changes per hour ensures that the air within the ante room is adequately filtered and refreshed, helping to reduce the potential for contamination. This number reflects the need for sufficient air turnover to mitigate risks associated with the preparation of compounded sterile products. Such environments must balance the need for cleanliness while ensuring a functioning space for personnel.