Fill finish (sterile filtration) operations are critical and often the only means to produce sterile liquid biopharmaceuticals as other means of sterilization will degrade the product(s). This complex packaging process has become more regulated and controlled in an effort to reduce the risks of contamination (with the greatest risk potential coming from cleanroom operators). This episode reviews current market trends and provides some characteristics expected of a top notch Fill Finish CMO, like Samsung Biologics in Incheon, South Korea.