

Refrigerated benchtop centrifuge
Sigma 4-5KL
A top performer for high throughput
The high-performance Sigma 4-5KL laboratory centrifuge is designed for throughput and capacity. The hight torque enables especially short acceleration times and makes laboratory processes efficient. This centrifuge is recommended for applications in clinical diagnostics and for life sciences applications
The refrigerated version Sigma 4-5KL, with a temperature adjustment range of -10°C to +40°C, is recommended for the protection of specimens with especially sensitive limit temperatures.
The Sigma 4‑5KL also boasts a low noise level and an extensive range of accessories. Up to 50 different routine protocols can be stored in program memory and easily retrieved.
What makes the Sigma 4‑5KL benchtop centrifuge so attractive
The Sigma 4-5KL refrigerated centrifuge is recommended for all applications in which the room temperature must be maintained. To save energy and reduce costs, the refrigerated centrifuge offers the ECO mode feature. After a user-settable time, the centrifuge automatically switches to standby mode if it is not being used. Along with being energy efficient, this improves the working atmosphere in the lab by switching off the refrigeration to significantly reduce the noise level. The refrigerated centrifuge has a very small footprint and offers good value for money.
Swing-out rotor
| max. volume | 3000 ml |
| max. speed | 5,700 rpm |
| max. RCF | 5,485 x g |
Fixed-angle rotor
| max. volume | 564 ml |
| max. speed | 13,500 rpm |
| max. RCF | 20,376 x g |
Product options
- IVD
- Biosafe swing-out and fixed angle rotors
- Clinic and cell culture packages
- RS232 interface
User
- Hospitals
- Food labs
- Universities & colleges
- Pharmaceutical labs
- Cell culture labs
- Environmental labs
Centrifuge table

For Sigma 4-5KL
17001
B x H x T [mm]: 605 x 581 x 635
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 13450
| 4 x 750 ml | |
| 4,700 rpm | |
| 4,643 x g |

Swing-out rotor 11650 +
Bucket 13450
| 4 x 750 ml | |
| 4,700 rpm | |
| 4,643 x g |

Swing-out rotor 11660 +
Bucket 13460
| 4 x 25 x 15 ml | |
| 4,700 rpm | |
| 4,470 x g |

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

Swing-out rotor 11660 +
Bucket 13421
| 4 x 61 mm | |
| 4,700 rpm | |
| 3,877 x g |

Swing-out rotor 11650 +
Bucket 13421
| 4 x 61 mm | |
| 4,700 rpm | |
| 3,877 x g |

Fixed-angle rotor 12449
| 48 x 2 ml | |
| 13,500 rpm | |
| 20,376 x g |

Fixed-angle rotor 12201
| 100 x 2 ml | |
| 6,500 rpm | |
| 7,699 x g |

Fixed-angle rotor 12174
| 24 x 15 ml | |
| 9,000 rpm | |
| 11,410 x g |

Fixed-angle rotor 12269
| 8 x 50 ml | |
| 11,360 rpm | |
| 15,005 x g |

Fixed-angle rotor 12265
| 6 x 94 ml | |
| 10,000 rpm | |
| 11,851 x g |

Fixed-angle rotor 12356
| 6 x 250 ml | |
| 5,450 rpm | |
| 4,815 x g |
Technical specifications
| Max. capacity [ml] | |
|---|---|
| swing-out rotor | 4 x 750 |
| fixed-angle rotor | 4 x 94 |
| Max. RCF | 20.376 |
| Max. speed [rpm] | 4.700 |
| Min. speed [rpm] | 100 |
| Noise level at maximum speed (approximate) [dB(A)] | |
|---|---|
| Max. acceleration time [s] | |
| Max. braking time [s] | |
| fixed-angle rotor 12449 | ≤ 55 |
| swing-out rotor 11650 with bucket 13460 + Cover | ≤ 54 |
| fixed-angle rotor 12449 | ≤ 32 |
| swing-out rotor 11660 with bucket 13460 + Cover | ≤ 26 |
| fixed-angle rotor 12449 | ≤ 48 |
| swing-out rotor 11660 with bucket 13460 + Cover | ≤ 26 |
| Power consumption [W] | 1.910 |
| Height x Width x Depth [mm] | 390 x 602 x 634 |
| Height with open lid [mm] | 865 |
| Weight without rotor [kg] | 110 |
| Refrigerant | R452a |
| Charge [kg] / Pressure [bar] | 0,290 / 31 |
| CO2 equivalent [t] | 0,621 |
| Contains fluorinated greenhouse gases in a hermetically sealed refrigeration system. (EU) 2024/2729; 2028-DEC-31. | |












