Filter Funnels and Filtration Assemblies are devices utilized in a laboratory setting for holding filter paper or membranes in the process of either vacuum filtration or gravity filtration. It usually consists of a funnel, filter holder, or filter flask, where fluids are allowed to pass through the filter while the particles or bacteria are retained. Filter Funnels and Filtration Assemblies are commonly used in a microbiology lab, pharmaceutical lab, chemistry lab, or an environmental lab.