The subject studied by cryobiology - the branch of biology that studies the behaviour of living matter subjected to intense cooling - is the effect that low temperatures produce on living cells, while its objective is the preservation of the morphological structure and functionality of cells, tissues or organs beyond the temporal limits set by nature. The most important applications of cryobiology are to be found in the preservation of blood, bone marrow, animal semen, human semen. The gas employed is liquid nitrogen. Since many years SOL is very successful in this industry, co-operating with universities, hospitals, research centres and offering the widest range of specialised equipment such as:

• Dewar containers for stocking the material
• Electronic freezers

The Dewar containers are two aluminium or stainless steel containers one inside the other. The inner container is completely covered by a super-insulating "band" and is connected to the outer container by a thin but strong neck made of highly thermomechanic-resistant plastic. The automatic or semiautomatic electronic freezers make it possible to adjust the cooling speed from an initial temperature to a final one, depending on the characteristics of the biological material to be frozen or defrozen.