ESR Filters

The Erythrocyte Sedimentation Rate (ESR) determination is a commonly performed laboratory test used to screen for the possible presence of bodily disease or abnormality. The test measures the distance red cells have fallen after separating from the plasma in a vertical ESR pipette and offers simple, safe, economical and highly-accurate Westergren ESR determinations. POREX® ESR Tube Filter Media is designed to draw blood up to the zero mark and act as a protective barrier that stops hazardous substances from escaping through the top of the pipette.