While Corning offers the classic 15, 50, 250 and 500mL centrifuge tubes, countless micro centrifuge tubes are available from Axygen.
There are also numerous products available in the BD Falcon range. In addition to the "classic" Falcon 50mL tube, other products are available. The range starts at 5mL tubes (FACS tube) and goes from 8mL, 14mL, 16mL to 19mL. The tubes are available in either polystyrene or polypropylene materials.