

Refrigerated benchtop centrifuge
Sigma 3-18KS
Top class for demanding users
The Sigma 3‑18KS is the perfect choice for everyone who sets very high requirements for refrigerated benchtop centrifuges and is looking for a broad range of operating options. The centrifuge enables RCF values of more than 30,000 x g and is very convenient in use thanks to the patented Spincontrol S one-knob control and automatic lid lock. Combined with the extensive range of rotors and accessories, this all-purpose centrifuge sets standards for versatility and performance.
What makes the Sigma 3‑18KS all-purpose centrifuge so attractive
The Sigma 3‑18KS makes work processes in laboratory operation more efficient, safer and more convenient. The benchtop centrifuge has an extraordinary capacity with a maximum of 4 x 400 ml. The Sigma 3‑18KS is nicely complemented by a large selection of fixed-angle and swing-out rotors, buckets and adapters, including many biosafe configurations. Particularly thanks to the ability to use fixed-angle rotors with high RCF, the centrifuge covers a distinctly broader spectrum of applications compared to competitive units.
Swing-out rotor
| max. speed | 14,000 rpm |
| max. RCF | 16,215 x g |
Fixed-angle rotor
| max. volume | 4 x 400 ml |
| max. speed | 18,000 rpm |
| max. RCF | 30,070 x g |
Product options
- IVD
- Inert gas port
- Biosafe swing-out and fixed-angle rotors
- Cell culture packages
User
- Hospitals
- Veterinary clinics
- Food labs
- Universities & colleges
- Pharmaceutical labs
- Cell culture labs
- Environmental labs
Centrifuge table

For Sigma 3-16KL, 3-18KS, 4-16KS
17926
B x H x T [mm]: 650 x 501 x 647
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 11180 +
Bucket 13190
| 4 x 400 ml | |
| 4,500 rpm | |
| 3,894 x g |

Swing-out rotor 11133 +
Bucket 13104
| 4 x 200 ml | |
| 5,500 rpm | |
| 5,242 x g |

Swing-out rotor 11135 +
Bucket 13124
| 2 x 66 mm | |
| 4,500 rpm | |
| 3,011 x g |

Swing-out rotor 11222 +
Bucket 13222
| 2 x 56 mm | |
| 3,000 rpm | |
| 1,218 x g |

Swing-out rotor 11241 +
Bucket 13241
| 2 x 66 mm | |
| 4,700 rpm | |
| 3,285 x g |

Fixed-angle rotor 12115
| 96 x 0,2 ml | |
| 16,400 rpm | |
| 29,468 x g |

Fixed-angle rotor 12154
| 24 x 2 ml | |
| 18,000 rpm | |
| 29,703 x g |

Fixed-angle rotor 12131
| 30 x 2 ml | |
| 16,400 rpm | |
| 30,070 x g |

Fixed-angle rotor 12349
| 48 x 2 ml | |
| 15,000 rpm | |
| 25,155 x g |

Fixed-angle rotor 12182
| 12 x 5 ml | |
| 17,500 rpm | |
| 28,761 x g |

Fixed-angle rotor 12111
| 10 x 10 ml | |
| 18,000 rpm | |
| 27,530 x g |

Fixed-angle rotor 12157
| 20 x 10 ml | |
| 10,000 rpm | |
| 10,956 x g |

Fixed-angle rotor 12311
| 12 x 15 ml | |
| 13,500 rpm | |
| 20,172 x g |

Fixed-angle rotor 12158
| 6 x 30 ml | |
| 18,000 rpm | |
| 28,616 x g |

Fixed-angle rotor 12150
| 6 x 50 ml | |
| 14,600 rpm | |
| 20,018 x g |

Fixed-angle rotor 12310
| 6 x 50 ml | |
| 14,500 rpm | |
| 22,096 x g |

Fixed-angle rotor 12156
| 8 x 50 ml | |
| 13,800 rpm | |
| 20,440 x g |

Fixed-angle rotor 12155
| 4 x 94 ml | |
| 14,500 rpm | |
| 21,390 x g |

Fixed-angle rotor 12159
| 6 x 94 ml | |
| 11,400 rpm | |
| 14,239 x g |
Technical specifications
| Max. capacity [ml] | |
|---|---|
| swing-out rotor | 4 x 400 |
| fixed-angle rotor | 6 x 94 |
| Max. RCF | 30.070 |
| Max. speed [rpm] | 18.000 |
| Min. speed [rpm] | 100 |
| Noise level at maximum speed (approximate) [dB(A)] | |
|---|---|
| Max. acceleration time [s] | |
| Max. braking time [s] | |
| fixed-angle rotor 12154 | ≤ 55 |
| swing-out rotor 11180 with bucket 13190 | ≤ 60 |
| fixed-angle rotor 12154 | ≤ 29 |
| swing-out rotor 11180 with bucket 13190 | ≤ 18 |
| fixed-angle rotor 12154 | ≤ 47 |
| swing-out rotor 11180 with bucket 13190 | ≤ 21 |
| Temperature setting range [°C] | -20 – +40 |
| Power consumption [W] | 1.010 |
| Height x Width x Depth [mm] | 355 x 630 x 600 |
| Height with open lid [mm] | 785 |
| Weight without rotor [kg] | 78 |
| Refrigerant | R513a |
| Charge [kg] / Pressure [bar] | 0,405 / 23 |
| CO2 equivalent [t] | 0,256 |
| Contains fluorinated greenhouse gases in a hermetically sealed refrigeration system. (EU) 2024/2729; 2028-DEC-31. | |













