Borosilicate glass filter holder assemblies for the microanalysis of liquids for biological or particulate contamination under vacuum. The anodized aluminium clamp secures the membrane between the funnel and glass base. The ground joint connection eliminates 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, located above the drip tip to prevent contamination of the vacuum line with filtrate droplets. These two compacts, glass vacuum filter holders are widely used for simple particle testing and clarification of solutions.
Scope of delivery
Size 25 mm, NS B24, 50 ml: Glass vacuum filtration unit with filter support consisting of PTFE ring and glass frit.
Size 47/50 mm, NS B40, 300 ml: Glass vacuum filtration unit with silicone cover and filter support consisting of PTFE ring and glass frit.
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