Tomy TMS-4 Swing Bucket Centrifuge Rotor 15000 RPM 16-Position 3.5ml w/ 4

Tomy TMS-4 Swing Bucket Centrifuge Rotor 15000 RPM 16-Position 3.5ml w/ 4 Buckets

The Tomy TMS-4 is a swing bucket centrifuge rotor rated to 15,000 RPM maximum. It holds 16 tubes across four swing buckets, with each bucket carrying four tube positions. The tube holders measure approximately 11mm in diameter by 27mm deep, giving a calculated capacity of roughly 3.5ml per position. The rotor is constructed from durable black plastic with a stainless steel center hub and hub fastener.

Specifications & What's Included

• Model: Tomy TMS-4
• Maximum Speed: 15,000 RPM
• Total Positions: 16 (4 swing buckets × 4 positions each)
• Tube Capacity per Position: ~3.5 ml (holders measure 11mm diameter × 27mm deep; calculated volume ~3,516 mm³)
• Rotor Type: Swing Bucket
• Number of Swing Buckets: 4 (numbered 1–4, positions within each bucket numbered 1–4 in red)
• Center Hub: Stainless steel with fastener
• Lid: Press-fit safety lid included (PRESS-button release)
• Body Material: Black molded plastic/composite
• Includes: Rotor body, 4 swing buckets, and lid as shown

Applications

Swing bucket rotors like the TMS-4 are standard accessories for benchtop microcentrifuges and allow tubes to swing out horizontally during a spin, producing pellets at the bottom of the tube rather than along the side wall. This makes them well suited for applications where complete pelleting and easy recovery of separated material matters — such as cell separation, DNA and RNA precipitation, protein pelleting, and general sample clarification. The Tomy TMS-4 is designed for use with compatible Tomy high-speed benchtop centrifuge models. Swing bucket rotors in this speed class have been a staple of molecular biology and biochemistry labs from the 1980s onward and continue to see active use in research, clinical, and teaching labs today. Replacement and spare rotors are regularly sought by labs that already own compatible Tomy centrifuge units.