Choose from 47mm or 90mm microfiltration FILTERWARE all-borosilicate glass filter apparatus consisting of a graduated funnel, a Standard Taper 40/35 glass joint connecting the coarse fritted filter support base to the filter flask, and an aluminum clamp (BP-1753). Use for HPLC mobile phase filtration, analysis of particulate or bacterial contamination, or for general laboratory microfiltration. NOTE: Components of 47mm apparatus are interchangeable with the corresponding components of other manufacturer's items and can be used with filtering manifolds. Scientists rely on the expertise and artistic skills of Wilmad-LabGlass' engineers and glass specialists to manufacture NMR and EPR consumables and laboratory glassware of the highest quality. Used daily in academia, healthcare and chemical, petroleum and other industrial applications, Wilmad offers 7000+ items as part of their standard catalog as well as custom fabrication for individual glassware, glass repair services and OEM glass parts.