Zymo-Spin III-P Column Assembly w/ 15 ml and 50 ml Reservoir (5 Pack)Available as a refill for the ZymoPURE Plasmid Midiprep Kit. The versatile Zymo Spin III P with 15 ml conical and 50 ml reservoirs can be used in centrifuges or on vacuum manifolds for the purification of plasmid DNA. The Zymo Spin III P features durable polypropylene construction and a unique silica based matrix that allows for purification of up to 300 g of plasmid DNA in 100 l eluate when used in combination with ZymoPURE Plasmid Prep buffers.