The Lambda Massfflow is a new mass flow controller system especially designed for use with LAMBDA laboratory bioreactors and fermentors. For example, it allows control of the pH of a cell culture by the controlled addition of gaseous CO2, the control of dissolved oxygen by regulation of the airflow or any other gas with a suitable controller. However, it can also be used independently, since all its functions can be controlled from the front panel of the MASSFLOW.
A high quality laminar mass flow sensor measures the flow rate. The result appears on the digital display. The mass flow cell has a very low pressure drop and a linearity error less than ±3% reading. The repeatability is better than ±0.5% reading. The flow rate is regulated by a special proprietary proportional needle valve controlled by a microprocessor. The flow rate can be programmed and volume totalized. MASSFLOW allows a precise, automatic control of pH in cell cultures without need of any other gas station.