Zymo-Spin V-PS Column Assembly w/15 ml Reservoir-X and 50 ml ReservoirAvailable as a refill for the ZymoPURE II Plasmid Midiprep and ZymoPURE Express Plasmid Midiprep Kits. The versatile Zymo Spin V PS with 15 ml and 50 ml reservoirs can be used in centrifuges or on vacuum manifolds for the purification of plasmid DNA. The Zymo Spin V PS features durable polypropylene construction and a unique silica based matrix that allows for purification of up to 1. 2 mg of plasmid DNA in 150 l eluate when used in combination with