Product Description Speed Range: 100-21000 rpm Speed Control: 20 rpm Maximum Force: 51,500 g Maximum Capacity: 3 L Timer: 0-99 hours 59.9 minutes and hold Temperature Range: -20 to 40C Temperature Control: 2C for temp 0- amb 1 C after dynamic calibration Weight: 656 Ilbs GMI Certified Pre-Owned Fully 90-Day Warranty Included The Beckman J2-MC system is a high-speed, high-capacity floor model ultracentrifuge. Equipped with microprocessor controls and an advance induction drive, the J2-MC offers precise speed control and ultimate reproducibility. The digital control system of the Beckman J2-MC ultracentrifuge puts the full power of the microprocessor control system right in the hands of the operator. The wide range of acceleration and deceleration profiles maximizes your throughput and improves the results of the procedures by minimizing poor separations. The versatile Beckman J2-MC centrifuge also carries 10 acceleration/deceleration profiles to meet the specific needs of every laboratory. This also protects sensitive samples and delicate gradients from abrupt speed changes in the crucial range between 0-500 rpm.