MicroFunnel Plus Disposable Filter Funnel Sterile 100mL. White gridded 0.45um Supor polyethersulfone membrane for hot water sampling such as hot loop water for injection. Leakproof vented lid and integral membrane seal. Filtration area: 13.46cm2. 635mm Hg vacuum. 6.1dia.x7.6Hcm (with cover).