Where there is innovative research using DNA and/or RNA specimens, long term storage of such material can be extremely costly and energy consuming, especially if the storage requires the use of freezers. Many security features are designed on these models to support researchers. Very durable and reliable system with an extremely low noise level. Efficient and effective use of a unique cascade compressor system with CFC-free natural gas. Safest environment for your samples due to temperature and power alarms, standard dry contacts.