| NOMENCLATURE |
DEHYDRATOR, DESICCANT, REFRIGERANT, LABORATORY. A DEVICE DESIGNED FOR
USE IN THE RESEARCH LABORATORY FOR THEPRESERVATION OF BIOLOGICAL
MATERIALS THROUGH THE PROCESS OF THE FREEZE DRYING TECHNIQUE; WHEREBY
THE MATERIAL TO BE DRIED MUST BE SOLIDLY FROZEN BEFORE BEING SUBJECTED
TO A VERY LOW ABSOLUTE PRESSURE (HIGH VACUUM) AND A CONTROLLED HEAT
INPUT. UNDER THESECONDITIONS THE WATER CONTENT (IN THE FORM OF AN ICE
MATRIX) IS SELECTIVELY REMOVED VIA SUBLIMATI ON, I.E.-ICE TRANSFORMS
DIRECTLY TO VAPOR, BY PASSING THE INTERMEDIARY LIQUID PHASE.
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