I.W. Tremont LabExact Hydroblokr -serological-pipette-protection-device, Female Luer, Male Slip, 0.22 μm, 100 pc/PAK

HydroBlokr™ stops, blocks and locks when pipettor over aspiration occurs, protecting against cross contamination. Fits typical pipette controllers and functions like standard filter until it is wetted and must be replaced PK100