Blood plasma freezer
KPFF 24B/KPFF 48B
KW
KW in addition to the -40°C liquid bath freezer, proposes an alternative solution, satisfying however the technical advice and the normative in place, on the freezing time of the plasma bags.
The adapted principal of thermal exchange, in this case, does not use a cold bath at -40°C, but -75/- 80 °C surfaces, with which the bags are in direct contact.
The plasma bags, to be frozen, are immersed, vertically, in wells in which the walls are at least –75°C -80°C. The geometry of the wells is conical, to simplify extraction and formation of the solid bag, without any impediment for the increase in volume which happens when there is a passing in state from liquid to solid.
Internal case, made of 6 or 12 wells in inox AISI 304 steel (AISI 316 on request) with BA polished finishing, with rounded corners for easy cleaning; the external structure is in glazed inox AISI 304 steel sheet; the insulation is in polyurethane CFC and HCFC free, expanded in situ, with density of 40 Kg./mc. and with a minimum mean width of 140 mm., including the door; the door is mounted on the hinges with ABS cover, auto balanced. Triple gasket (absolute retention guarantee against air entry) in silicon rubber with welded joints, warmed up by the refrigerant and of unlimited duration.
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