Product Description

RAPID FREEZING:
The bag is in contact with the surfaces of the wells and intense extraction of thermal energy is obtained in this manner, minimizing in this way the freezing time: <45‘ for 24 or 48 (450 ml.) nominal standard bags, with a net content of plasma of at least 230 cc. and an initial temperature between +25°C and +30°C (KW has undertaken tests with bags with a mass of 260 gr. each).

The storage solution in vertical encounters, in fact, all the freezing advantages of the horizontal freezers, leaving the vertical placement of the plasma bags salvaged.
The surface of the wells is smooth and in inox steel, without edges, and therefore permit the safe storage against accidental breaks or bumps of the bags; permits furthermore the eventual download of liquids exiting due to breakage, from the bottom, or the successive condensation to a freezing and maintenance stop, be means of outlets (one for each well), all gathered and l eading to a single external tube.

TEMPERATURE UNIFORMITY
minimum alteration of the internal T during the loading phase of the plasma bags seeing as the movement is minimal from the internal cold air, that tends to remain on the bottom of the wells guaranteeing good cooling – freezing during the bag contact – well walls.

VERTICAL FREEZING
Simplifies the bag immersion seeing as the operator does not feel the intense coldness from the wells and no air bubble inside the bags, with minimum breakage risk of the bags; the shape of frozen bag is like a tile, so the following phase of storage is easier.

SPATIAL DISTRIBUTION of BAGS
In conventional freezer, with horizontal shelves, the plasma bags are often stored on one another and air distribution is not perfect.
It follows that freezing of the individual pockets varies considerably. In contrast, the freezing procedure proposed by KW guarantees
identical conditions of freezing for each individual bag, with consequent higher yields of factor VIII and more reliable.

The shape of the bag is very compact, in the form of a thin parallelepiped, and allows easy storage.

AUTOMATIC STORAGE (option on request)
when the door is closed, the deflectors move automatically compressing pockets in the wells for optimum freezing. (increased safety and ease of use).

MINIMUM MAINTENANCE
no ice formation in the area around the wells and in the retention gaskets, for minimum maintenance and an absolute guarantee of the maintenance of a constant T of -75/- 80 °C.; no necessity of defrosting, possibility of continuous freezing.

MAX ERGONOMICS
An handy load height eases the operator, without the introduction of any addition to a very low T and without
contact with the cold air.

ENERGY SAVING
minimum energy consumption in addition to the thermodynamic performance, thank to the high insulation and to the horizontal positions of the- 70°C wells.

PROCESS TRACEABILITY
It’s possible to equip the freezer with an electronic recorder and a bar code reader; the user can set a work schedule for single freezing batch, determining a) the single plasma units b) the operator c) the pulling down curve of T: all data are exportable whether in paper format or in digital format, which guarantee the full traceability of the freezing batch.

QUALITY OF FROZEN PLASMA
The quality was evaluated through the values of concentration of fibrinogen, before and after freezing,
and concentration of VIII factor post freezing.

The recovery of 96% of fibrinogen and 81% of concentration of VIII factor post, are very good results.

Technical Specifications

Model	Max. External Dimension (LxWxH) cm	Plasma Bags shelf level	Internal wells	Used refriegrant	Power supply	Weight
KPFF 24B	120x84x126	117 cm	n.6 (to 4 bags cad.)	R404AedR508B	V230/1/Hz 50 Max absorption 15A	250 Kg
KPFF 48B	179x84x126	117 cm	n.12 (to 4 bags cad.)	R404AedR508B	V400/1/Hz 50 +N+T Max absorption 10A	400 Kg

Full Details