Mycoplasma is known to be a common source of bioprocessing contamination and one of the most difficult contaminants to detect. The effect of a mycoplasma contamination can be catastrophic, resulting in loss of a batch, loss of future production, down-time for investigation and corrective actions, and the potential risk of therapeutic supply shortages to immunocompromised patients. To demonstrate Millipore Express SHR filters’ mycoplasma clearance capability over extended filtration times, two separate Acholeplasma laidlawii retention studies…