The Biosystem series provides automatic liquid nitrogen refrigerators for storage from 10,000 to 98,000 vials in vapour and liquid phase. The Biosystem Archive models are designed to maximise economic operation with highest capacity sample storage for the lowest possible consumption of LN₂ for bulk storage of samples up to 98,000. Every Biosystem Archive series refrigerator incorporates the ‘Vapour Guard’ which guarantees that liquid can never come into contact with samples. A liquid proof rotating internal container allows liquid levels to be controlled safely within the annular space between the drum and container wall generating near isothermal temperature mapping throughout the storage space. The container is easily turned so that every part of the storage system is accessible at the neck opening. The microprocessor control system provides full control and security backup with the highest available level of reliability and sensor accuracy. The Archive Series offers the best combination of trouble-free sample security and economic operation together with excellent isothermal properties. In vapour phase storage, temperature throughout the Archive refrigerator.

• Automatic top up of LN₂
• Fully automatic with 4 level sensors
• Can be stand alone or integrated into pipeline system
• Self diagnostic and data logging processor
• Liquid or vapour phase
• Dual fill solenoids as standard
• MDD93/42/EEC compliant
• Massive capacity of between 40,000 to 97,000 x 2mL vials
• Vapour phase storage at -190°
• Dry storage area free from LN₂
• Vapour guard the only guaranteed method of prevention of cross-contamination
• Pipeline ready with built in hot gas bypass
• Off centre neck for low consumption of LN₂
• Suitable for cord bank sample storage
• Biobank storage compatible
• Protocol testing
• All units can be offered with IQP/OQP
• Vapour guard feature fitted as standard
• Hot gas by pass fitted as standard
• De-fog and quick chill functions for good visibility on lid opening and accelerated re-cooling after lid is shut (configurable)
• Control system that can cope with LN₂ pressures from 20 to 40psi
• Key operated lockable lid for complete security
• Optional coloured (anodised) storage racks available for easier identification
• Dual solenoid valves fitted for operational security
• Platinum resistance temperature sensing (most accurate and reliable)
• Full operational and installation instructions
• Includes foldaway non-slip step for easy access