Automated Liquid–Liquid Displacement Porometry (LLDP) for the Non-Destructive Characterization of Ultrapure Water Purification Filtration Devices

This scientific publication presents a novel modification of the liquid–liquid displacement porosimetry (LLDP) method, aiming for non-destructive automated analysis water purification membrane filtration devices in microfiltration (MF) and ultrafiltration (UF) range. The technical adaptation LLDP enables direct in-line porosimetric commercial devices, avoiding devices’ destruction. Six commercially available with polyethersulfone (PES) polysulfone (PS) membranes were studied using an improved device developed by IFTS, which was based on instrument. evaluated three different configurations: flat disks, hollow fibers, pleated membranes. results obtained proposed method compared other characterization techniques, including submicronic efficiency retention, image scanning electron microscopy (SEM), gas–liquid (GLDP). comparison demonstrated that accurately determined characteristics filters. It proved to be precise technique evaluation filter performance, as well periodic quality control fouling degree assessment devices. modified approach offers significant potential advanced contributing understanding optimization their performance.