| Protected process, contaminant or particle duty and consequence | Filter performance evidence matches the defined process duty | Verify item, lot, dimensions, seal and certificates on receipt | Application-specific cartridge and housing specification |
| Flow, pressure, temperature, chemistry and sanitation conditions | Materials and seals tolerate product and sanitation exposure | Record clean and trended differential pressure at representative flow | Approved item, material, seal and alternative-source register |
| Retention-rating test basis, media, area, seals and housing geometry | Installed pressure loss and life support the operating schedule | Audit removal, housing inspection, installation and hygienic release | Differential-pressure, life and quality trend plan |
| Upstream loading, differential pressure, life, cost and disposal evidence | Changeout and release prevent bypass and contamination | Investigate premature plugging and compare upstream evidence | Controlled changeout, disposal and hygienic release procedure |