Gram BioMidi freezers
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Key features of Gram BioMidi freezers
- Temperature ranges from approximately −25 °C to −5 °C and −40 °C to −5 °C
- Reliable and stable temperature control
- Professional alarm system with visual and audible alerts
- Potential-free alarm contact for external monitoring
- Suitable for GMP, GLP and pharmaceutical environments
- Compact design with professional performance
Difference between RF and EF BioMidi freezers
- RF models – laboratory freezers with a temperature range of approximately −25 °C to −5 °C, suitable for general laboratory and clinical applications
- EF models – low temperature freezers with a temperature range of approximately −40 °C to −5 °C, suitable when lower storage temperatures are required
Applications
- Storage of reagents, media and samples
- Pharmaceutical and clinical storage
- Biotechnological and microbiological research
- QC and QA laboratories
- Research institutes and hospitals
How are Gram BioMidi product codes structured?
Each Gram BioMidi freezer is assigned a product code that provides insight into the freezer type and configuration:
- RF – Laboratory freezer (−25 °C to −5 °C)
- EF – Low temperature freezer (−40 °C to −5 °C)
- Number (425 or 625) – Net storage volume
- C – Glass door
- L – Solid door
Example: BioMidi RF425C is a BioMidi laboratory freezer with a temperature range down to approximately −25 °C, a net capacity of around 425 litres and a glass door.
Available Gram BioMidi freezer models
EF models (−40 °C to −5 °C)
- BioMidi EF425C – glass door
- BioMidi EF425L – solid door
RF models (−25 °C to −5 °C)
RF 425
- BioMidi RF425C – glass door
- BioMidi RF425L – solid door
RF 625
- BioMidi RF625C – glass door
- BioMidi RF625L – solid door
Frequently asked questions
When should I choose an EF instead of an RF BioMidi freezer?
Choose an EF BioMidi freezer when storage at lower temperatures down to approximately −40 °C is required. For standard laboratory applications down to approximately −25 °C, an RF BioMidi freezer is sufficient.
Which BioMidi freezer is best suited for my application?
The right choice depends on the required temperature range, storage volume and available space. Our specialists are happy to assist you in selecting the most suitable BioMidi freezer.

Gram BioMidi freezers are professional laboratory freezers designed for the safe storage of temperature-sensitive samples, reagents and pharmaceutical products at sub-zero temperatures. These freezers are developed for applications where reliable temperature stability and a compact footprint are essential.
BioMidi freezers are part of the Gram BioLine range and are positioned between compact freezers and high-capacity models. With different temperature ranges, storage volumes and door configurations, BioMidi freezers are well suited for daily use in medical, pharmaceutical and research environments.
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This product group is part of the category Laboratory freezers and belongs to the Gram Bioline range.