Product Description 4 x 2.2 mL Titanium Buckets 55,000 rpm Optima MAX Series Ultracentrifuges Swinging Bucket rotor All GMI ultracentrifuge rotors are safety tested and certified TLS-55 Rotor, Swinging Bucket, Aluminum, 4 x 2.2 mL, 55,000 rpm, 259,000 x g Beckman TLS-55 Swinging Bucket Rotor (346936) Specifications: UNSPSC 41103909 Rotor Type Ultra Swinging Bucket Maximum Speed 55,000 rpm Maximum RCF at r max (g) 259,000 x g k-Factor 50 Rotor Material Anodized Aluminum Bucket Material Titanium, Anodized Aluminum Cap r min 42.2 mm r av 59.4 mm r max 76.5 mm Nominal Rotor Capacity 8.8 mL Number of Rotor Cavities x Nominal Largest Load Capacity 4 x 2.2 mL Nominal Largest Container/Bucket/Carrier/Canister Dimensions 11 34 mm For use in the Optima MAX-XP Benchtop Ultracentrifuge, Optima TLX personal micro-ultracentrifuges, and Optima MAX high-capacity personal micro-ultracentrifuges, and the discontinued TL-100 and Optima TL micro-ultracentrifuges.