“…Additionally, for high protein concentration formulations, the suck-back (pump-reversal) on peristaltic pumps must be carefully controlled to avoid droplet formation on the end of the filling needle, which is prone to rapid drying and clogging of the filling needles during the process. 65,66 The time-pressure filling system is another technology that has gained increasing popularity in the pharmaceutical industry. One of the benefits of this system is reduced product contact parts and the absence of surface-to-surface contact (grinding) during the filling process.…”