When clarifying plant‑based extracts, manufacturers often struggle to decide between polymeric ultrafiltration and ceramic membranes. This article compares their investment cost, chemical resistance, service life and operating limits. It offers practical selection principles based on feed liquid solids, viscosity, pH‑temperature conditions and project budget. Buyers should not only focus on upfront price, but also evaluate long‑term running expenses. Pilot tests with real feed material are suggested to confirm actual flux and product recovery. Even high‑performance ceramic membranes require proper pretreatment to avoid severe fouling.