15 mL Tube Rack is designed for use with the QuadroMACS™ Separator allowing to process up to four samples in parallel. This rack is also suitable for use with the OctoMACS™ Separator if tubes with a capacity of 13-15 mL are preferred over 5 mL tubes (see also the OctoMACS Acrylic Tube Rack). The MACS 15 mL Tube Rack holds up to 24 round-bottom tubes or conical tubes.