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Minimized Stainless Steel in the vessel

A corrosion-resistant design with minimal stainless steel exposure ensures reliable cultivation in aggressive and saline process environments.

Minimized Stainless Steel Exposure for Corrosion-Resistant Bioprocessing

Traditional laboratory bioreactors rely extensively on stainless steel components such as cannulas, impellers, and fittings that come into direct contact with the culture medium. While stainless steel (SS316) offers excellent corrosion resistance under most conditions, prolonged exposure to seawater and other chloride-rich or highly saline media can eventually lead to pitting corrosion, crevice corrosion, and surface degradation. These effects may reduce component lifespan, increase maintenance requirements, and potentially introduce metal ions into sensitive biological cultures.

The LAMBDA Minifor2Bio touch Fermenter-Bioreactor addresses this challenge through an engineering design that minimizes the amount of stainless steel exposed to the cultivation medium. Wherever practical, stainless steel wetted components can be replaced or isolated using chemically inert materials such as PTFE (Teflon®) and silicone, significantly reducing the risk of corrosion while maintaining reliable bioprocess performance.

This design is particularly advantageous for applications involving marine microbiology, seawater cultivation, halophilic microorganisms, hydrocarbon biodegradation, environmental biotechnology, and other processes employing aggressive or high-salinity media.

High-Quality Borosilicate Glass Vessel

The cultivation vessel is manufactured from laboratory-grade borosilicate glass, providing excellent chemical resistance while eliminating corrosion associated with metallic vessels.

Benefits

  • Chemically resistant construction

  • Excellent visibility of the cultivation process

  • No corrosion

  • Easy cleaning and sterilization

  • Long operational lifetime

Corrosion-Resistant PTFE Cannulas

Instead of conventional stainless steel cannulas, the MINIFOR offers optional PTFE (Teflon®) cannulas for gas supply, liquid addition, and sampling.

PTFE is highly resistant to aggressive chemicals and chloride-rich environments, making it particularly suitable for seawater-based fermentations.

Benefits

  • Excellent resistance to seawater and saline media

  • Chemically inert

  • No metallic contamination of the culture

  • Long service life

  • Suitable for highly corrosive applications

Biomimetic Silicone Fishtail Agitation

Unlike conventional fermenters that employ rigid stainless steel impellers together with vessel baffles, the Minifor2Bio touch utilizes a patented biomimetic mixing system based on flexible silicone agitation discs.

The silicone disc moves vertically through the culture, generating efficient mixing while minimizing direct metal contact with the medium.

Benefits

  • Gentle mixing

  • Low shear conditions

  • No internal baffles required

  • Simplified cleaning

  • Reduced stainless steel exposure

Optional Silicone or PTFE Covered Agitation Components

For applications requiring maximum corrosion resistance, the stainless steel agitation shaft or impeller can be wrapped with silicone or PTFE, preventing direct contact between the metal surface and the cultivation medium while maintaining normal mixing performance.

Benefits

  • Further minimizes metal exposure

  • Improves corrosion resistance

  • Preserves agitation efficiency

  • Suitable for aggressive media

Sealed Agitation Disc Fixation

The silicone agitation disc is secured using three small fixation screws. When required, these screws can be sealed using an appropriate sealant to eliminate direct contact between the stainless steel fasteners and the culture medium.

This further reduces exposed metallic surfaces and enhances corrosion resistance for long-term operation in saline environments.

Applications

The corrosion-resistant design makes the Minifor2Bio touch particularly suitable for:

  • Marine microbiology

  • Seawater fermentation

  • Halophilic microorganisms

  • Hydrocarbon biodegradation

  • Environmental biotechnology

  • Aquaculture research

  • Algal cultivation

  • Bioremediation studies

Engineering Advantages

  • Minimal stainless steel exposure to the culture medium

  • Corrosion-resistant wetted components

  • Reduced risk of metallic contamination

  • Excellent compatibility with seawater and chloride-rich media

  • Lower maintenance requirements

  • Increased component longevity

  • Reliable operation during long-term saline cultivations

  • Suitable for demanding marine and environmental biotechnology applications