Material: Glass and 316L stainless steel 
The diameter and height ratio: 1:2-3

Mixing method: mechanical stirring

Sterilization method: on-site sterilization auto control or manual control  

Control system: Siemens PLC, industrial LCD touch computer control, parameters can be set to store, can be remotely connected to the computer through the USB interface, the data

Stirring system 
Mechanical sealing system : high-powered stirring oar, antifoam oar;

AC electrical machine: infinite speed variation; rpm in the fermenter: 70~1200rpm±1%, the height of the stirring oar can be adjusted, too.

Temperature detection and control 
Heat by thermostatic water tank and circulate by circulating pump(Grundfos, Denmark), autocontrol (cooling water+5℃) to 65℃±0.1℃,temperature probe(US)

pH detection and control 
2.00-12.00±0.05pH, autocontrol by adding acid and base, pH sensor (Mettler, Switzerland) and shielding lead (Mettler, Switzerland). fermenter is autocontrolled with peristaltic pump

DO detection and control 
0-150±3% displaying precision 0.1%, sensor (Mettler, Switzerland) and shielding lead(Mettler, Switzerland)

Feed control 
Fermenter uses peristaltic pump (Longe) to add materials

Antifoam control 
Tested by sencor and added antifoamer by peristaltic pump

Intake control (air) manual control rotameter

Pressure detection and control 
Pressure Control: Pressure meter and digital display and digital remote control, pressure control