This KONTES® Ultra-Ware® 47mm vacuum filter holder assembly can be used with either filter flasks or vacuum manifolds. Designed for filtration of viscous or proteinaceous solutions or to produce ultraclean filtrates. It has a 316 stainless steel metal support screen with a glass support base that holds a 47mm membrane filter.
These vacuum filter holders are recommended for routine filtration analysis of corrosive liquids and the removal of particulates from HPLC solvents. The ground joint connection eliminates the phthalate contamination that can occur when using silicone or neoprene stoppers. The support base has a coarse porosity glass frit and an integral vacuum connection that is located the drip tip to prevent contamination of the vacuum line with filtrate droplets. Each apparatus is supplied with funnel, anodized aluminum clamp, 47mm or 90mm fritted glass support base and filtration flask.