

Refrigerated benchtop centrifuge
Sigma 6-16KS
High-performance all-rounder for the most stringent demands
The compactness of a benchtop centrifuge with the performance of a floor-standing centrifuge. The refrigerated Sigma 6‑16KS is suitable for a wide variety of routine and research applications. Along with high throughput with fixed-angle and swing-out rotors, it easily achieves RCF values up to 25,419 x g. Its key features are high versatility, an advanced user interface and outstanding reliability.
What makes the 6‑16KS refrigerated benchtop centrifuge so attractive
Particularly thanks to the ability to use large-capacity fixed-angle rotors with high RCF, the centrifuge covers a distinctly broader spectrum of applications compared to competitive units.
The Sigma 6‑16KS delivers precise separation results in all cases, whether blood pouches, petroleum flasks, microtiter and deepwell plates, or tubes and flasks from 0.2 ml to 1,000 ml.
It is widely used in microbiology and molecular biology, pharmaceutics, genomics, clinical diagnostics, bioproduction, cell culture labs and transfusion facilities. A total of twelve fixed-angle and six swing-out rotors are available, along with numerous buckets and adapters – including many biosafe configurations.
The Sigma 6‑16KS features a clearly organised display. The patented Spincontrol S one-knob controller provides superior operating convenience and process reliability. Optimisation of separation runs and yields is supported by 60 programs with the option of making user-specific settings, as well as 30 profiles for use as acceleration or braking curves. Custom person-specific settings can be saved with password-protected access control. An extremely practical feature is the large program status display, visible from a distance, with a progress bar.
Swing-out rotor
| max. volume | 4000 ml |
| max. speed | 5,700 rpm |
| max. RCF | 5,485 x g |
Fixed-angle rotor
| max. volume | 3000 ml |
| max. speed | 15,000 rpm |
| max. RCF | 25,419 x g |
Product options
- Inert gas port
- GMP model with water cooling
- Biosafe swing-out and fixed-angle rotors
- Clinic and cell culture packages
- RS 232 interface
- DataSuite data documentation system
User
- Hospitals
- Food labs
- Universities & colleges
- Pharmaceutical labs
- Cell culture labs
- Environmental labs
- Oil industry
- Blood banks
Centrifuge table

For Sigma 6-16KS
17921
B x H x T [mm]: 790 x 515 x 684
Sigma centrifuge tables are available in six different sizes. Matched to the corresponding centrifuge dimensions, they combine convenient work height with an optimally calculated footprint. The tables are made from coated sheet steel and are equipped with a storage compartment (with two doors) and a convenient pull-out shelf. Lockable castors allow the centrifuge tables to be easily moved and positioned in the laboratory.
Rotors

Swing-out rotor 11660 +
Bucket 13650
| 4 x 1000 ml | |
| 4,700 rpm | |
| 5,236 x g |

Swing-out rotor 11650 +
Bucket 13650
| 4 x 1000 ml | |
| 4,700 rpm | |
| 5,236 x g |

Swing-out rotor 11150 +
Bucket 13420
| 8 x 230 ml | |
| 4,700 rpm | |
| 4,766 x g |

Swing-out rotor 11156 +
Bucket 13127
| 6 x 200 ml | |
| 5,100 rpm | |
| 5,554 x g |

Swing-out rotor 11165 +
Bucket 13113
| 4 x 100 ml | |
| 3,000 rpm | |
| 2,143 x g |

Swing-out rotor 11118 +
Bucket 13218
| 2 x 93 mm | |
| 5,700 rpm | |
| 5,485 x g |

Swing-out rotor 11150 +
Bucket 13221
| 4 x 56 mm | |
| 5,100 rpm | |
| 4,653 x g |

Swing-out rotor 11660 +
Bucket 13621
| 4 x 61 mm | |
| 4,700 rpm | |
| 4,495 x g |

Swing-out rotor 11650 +
Bucket 13621
| 4 x 86 mm | |
| 4,700 rpm | |
| 4,495 x g |

Fixed-angle rotor 12449
| 48 x 2 ml | |
| 15,000 rpm | |
| 25,155 x g |

Fixed-angle rotor 12201
| 100 x 2 ml | |
| 9,600 rpm | |
| 16,795 x g |

Fixed-angle rotor 12450
| 24 x 5 ml | |
| 14,000 rpm | |
| 25,419 x g |

Fixed-angle rotor 12174
| 24 x 15 ml | |
| 12,000 rpm | |
| 20,285 x g |

Fixed-angle rotor 12269
| 8 x 50 ml | |
| 13,500 rpm | |
| 21,191 x g |

Fixed-angle rotor 12266
| 8 x 50 ml | |
| 14,000 rpm | |
| 21,913 x g |

Fixed-angle rotor 12265
| 6 x 94 ml | |
| 14,000 rpm | |
| 23,228 x g |

Fixed-angle rotor 12356
| 6 x 250 ml | |
| 11,200 rpm | |
| 20,335 x g |

Fixed-angle rotor 12600
| 6 x 500 ml | |
| 9,600 rpm | |
| 17,207 x g |
Technical specifications
| Max. capacity [ml] | |
|---|---|
| swing-out rotor | 4 x 1.000 |
| fixed-angle rotor | 6 x 500 |
| Max. RCF | 25.419 |
| Max. speed [rpm] | 15.000 |
| Min. speed [rpm] | 100 |
| Noise level at maximum speed (approximate) [dB(A)] | |
|---|---|
| Max. acceleration time [s] | |
| Max. braking time [s] | |
| fixed-angle rotor 12449 | ≤ 66 |
| swing-out rotor 11660 with bucket 13450 | ≤ 57 |
| fixed-angle rotor 12449 | ≤ 28 |
| swing-out rotor 11660 with bucket 13450 | ≤ 34 |
| fixed-angle rotor 12449 | ≤ 43 |
| swing-out rotor 11660 with bucket 13450 | ≤ 34 |
| Temperature setting range [°C] | -20 – +40 / -20 – +60 |
| Power consumption [W] | 2.000 |
| Height x Width x Depth [mm] | 483 x 581 x 711 |
| Height with open lid [mm] | 990 |
| Weight without rotor [kg] | 158 |
| Refrigerant | R452A |
| Charge [kg] / Pressure [bar] | 0,590 / 25 |
| CO2 equivalent [t] | 1,263 |
| Contains fluorinated greenhouse gases in a hermetically sealed refrigeration system. (EU) 2024/2729; 2028-DEC-31. | |













