We provided Sartorius Midisart® Series Filter as a compact, sterile air and gas filter to deliver high airflow rates using a hydrophobic PTFE membrane—perfect for lab purification, bioreactor venting, fermentation carboys, and autoclave exhaust.

We reinforced the PTFE film with polypropylene gauze and validated each filter with factory integrity testing and USP plastic Class VI compliance, ensuring dependable performance and traceability. We engineered it to withstand up to 20 autoclave cycles at 134 °C while maintaining excellent moisture barrier properties. Lightweight at just 20 g and compact at 64 mm diameter, Midisart® series minimizes tubing strain and integrates effortlessly into single-use systems. Choose from 0.2 µm or 0.45 µm pore sizes, available in various sterile or non-sterile connector configurations—so you get customized, high-quality filtration right out of the box.