Oval PFT Filter with Nose Clip for MedGraphics preVent™ 50/CSKit Oval Filter with Nose ClipSKU: 7779547USD 156.25PrecioShipping Terms PolicyCantidad*Agregar al carritoFilter Specifications Bacterial Filtration Effeciency 99.99% Viral Filtration Effeciency 99.99% Dead Space Approx. 35ml (cc) Resistance 0.23 cm H2O/L/sec approx. Material K resin case Electrostat® fitrate medium Nelson Labs Test Results