Universal rotor for 2 poliamide adapters (cone bottom) and 2 stainless steel adapters. Maximal size of applied test-tubes (D x L): 30 x 135 mm – 2 pcs. 17,5 x 131 mm – 2 pcs. Top speed: 3500 rpm. Total test tube imbalance limit: 5 g. Autoclave sterilization at a temperature up to 121 °С (20 minutes) is allowed.