and acid resistant stainless steel with total volume 3,5 l and working volume 1,5-3 l for sterilisation in autoclave. The fermenter comprises a glass vessel with lid in acid resistant
stainless steel. The lid is sealed with a silicone rubber O-ring and is tightened to the glass vessel by a clamp made of acid resistant stainless steel.
The lid is equipped with a removable
bearing housing for the mechanically sealed agitator shaft and twelve connections for electrodes and accessories with max. diameter 12 mm.
The bearing housing is sealed with a silicone rubber
O-ring. The shaft is mounted in ball bearings and separated from the environment with two radial gasket rings made of Viton. The agitator motor can easily be separated from the bearing housing.
The motor connector part is prepared for inductive sensor for measuring of agitator speed.
The standard design includes cooler with two baffles, pockets for heater and Pt100 sensor, heater,
emptying tube, ring sparger, shaft with adjustable 6-blade impeller, inlet ports, reflux condenser, sampling device, septum connection, holder for sterile filters and tools.
The lid and
connection parts can easily be separated for cleaning. All parts in contact with the process are electropolished. O-rings are made of silicone rubber.
The agitator can be adapted for different
processes by replacing the Rushton turbine with i.e. a marine propeller, or using a magnetic bottom rod agitator.
Drive and Piping Unit
The cables from the agitator motor, the
inductive sensor and the heater are connected to the unit. It comprises a compact case with main switch, fuses, transformer, motor speed control unit, relays and connections for dosing pumps and
control unit. The Drive and Piping Unit is also equipped with a cooling valve and an air flow meter with needle valve for manual control of air flow to the fermenter.
Service connections are normally
- electricity 240 VAC, 50 Hz
- tap water 1 - 6 bar
- compressed air 0,2 - 0,5 bar
Control Unit
The system can be provided with the Novaferm Fermenter Microprocessor Control System for direct digital control of fermentation processes based on programmable logic
controllers from the SIMATIC S7 (Siemens) family. The modular concept allows control of fermenter systems from laboratory to industrial scale.
The standard control system includes hard- and
software for control of temperature, speed and pH and measurement of dissolved oxygen. Additional parameters on request. PC software for operator interface, but not hardware is included in the
standard package.
The system can also be provided with a basic control system with analog controls for temperature, speed, pH etc.
Sensor Kit
The standard kit contains the following:
- 1 pce Pt100 sensor with cable and connector
- 1 pce Inductive sensor with cable and connector
- 1 pce pH sensor (Mettler) with cable and connector
- 1 pce pO2 sensor (Mettler) with cable and connector
- 1 pce Foam sensor with cable and connector
Additional sensors on request
Pump Unit
Peristaltic pump for dosing of acid, alkali or other addition. Fix speed pump. Including glass container, tubing,
sterile filter and needles. Container, hose and needles to be sterilised in autoclave. Delivered with silicone hose diameter 6,4/3,2 mm.
