Precise Gas Supply

Instead of manual rotameters that fluctuate with pressure and temperature shifts, the unit employs an electronic thermal mass flow meter paired with a micro‑proportional needle valve. It directly measures mass flow rate (0–5 L/min) independent of backpressure variations. This design enables continuous, automated feedback regulation of dissolved oxygen (pO2) by dynamically adjusting airflow or gas supply, ensuring stable culture conditions without manual intervention.

Learn more how LAMBDA Massflow regulators works:

Accurate gas delivery is essential for reproducible bioprocessing. While standard bioreactors often rely on simple rotameters (floating-ball capillaries) that fluctuate with pressure and temperature changes, the Minifor2Bio touch features high-precision thermal mass flow control as standard. Coupled with a microprocessor-controlled proportional needle valve, it ensures continuous, precise gas dosing unaffected by system pressure build-ups or filter blockages—meeting strict GLP and GMP quality standards.

Key Technical Advantages of MASSFLOW Regulators

Thermal Mass Flow Sensing Measures actual gas mass (molecule count) rather than volumetric flow by detecting flow‑dependent temperature differences (ΔT=T2−T1) across a central heating element. This measurement remains fully independent of pressure and temperature variations.

Proportional pH & pO2 Dosing Microprocessor‑managed proportional needle valves deliver smooth, continuous gas adjustments for optimal pH and dissolved oxygen (DO) control without sudden flow spikes.

Decoupled DO & Agitation Control Regulates dissolved oxygen directly through gas flow rate rather than relying solely on stirrer speed variations, ensuring optimal mixing and nutrient distribution at any agitation rate.

Full Data Traceability Provides precise, continuous gas volume data for effortless digital recording, tracking, and process validation.

Modular Expansion

Seamlessly integrates with autonomous MASSFLOW 500 and MASSFLOW 5000 modules to configure custom multi‑gas stations (O2, N2, CO2) tailored to specific cell culture requirements.