The Optima TLX features maximum performance capabilities of 657,000 x g and sample volumes ranging from 0.2 mL to 5.1 mL per tube. System features include imbalance-tolerant, direct vacuum-encased, air-cooled drives with 5-year warranties; rotor imbalance detection; moisture-purging vacuum pump; fixed angle rotors with a fluid-containment annulus; chlorofluorocarbon-free, solid-state temperature control systems; automatic rotor identification; user diagnostics; programmability with up to five step changes; ten selectable acceleration/deceleration rates; and microprocessor control. Rotors are sold separately and are fully warranted for five years.