Columns Plastic Mini Columns MC MC This column serves as a tool for purification using small quantities of resin (100 – 250 µl). It is a single-use format for centrifuge purifications. The packages contain 25 or 100 Plastic Mini Columns supplied with their top caps. The Plastic Mini Columns are polypropylene and contain a polyethylene frit with a nominal pore size of 20µm). For Bulk... Add to cart Select 100 25 Add to cart