When designing a cleanroom for both USP <797> and USP <800> sterile compounding it might make sense to include an airlock between spaces in an effort to minimize or eliminate the ingress of particulates or CFUs. This principle is especially important if the compounding pharmacy is doing what we now know as “high risk” compounding which is starting from nonsterile ingredients, also known as pre-sterilization weighing. This video walks through this cleanroom design consideration.
