Q-sep Tube Rack for 15 mL Centrifuge TubeQ-sep Tube Rack for 50 mL Centrifuge Tube Back to: Q-sep Tube Racks Q-sep Tube Rack for 2 mL Centrifuge Tube Product Code: 23995 Q-sep™ Tube Rack for 2mL Centrifuge Tube, Holds 100, Polypropylene, White Price £42.00 Description Available for 2 mL, 15 mL, and 50 mL tubes. Alphanumerical grid reference on top tier for easy identification of samples. Easy to assemble, simply fold and snap together securely.