Greiner Bio-One 188171 Polystyrene Centrifuge Tube with Blue Screw Cap, 15 mL Capacity, Sterile, Conical, V Bottom, 10 Bags of 100 (Pack of 1000): Amazon.com: Industrial & Scientific
15 & 50mL Centrifuge Tubes from Globe Scientific - Producers of Exceptional Quality Laboratory Supplies
15mL Polystyrene Centrifuge Tubes
Racked 25mL Sterile Centrifuge Tube With Graduation Lines And Blue Screw-Cap For Collecting SalivaDirect Samples