Контактні шокові швидкозаморожувачі плазми KPFF24B та KPFF48B В комплекті Комп'ютерна Система RST із зчитувачем штрихкодів. Шокова заморозкадонорської плазми. Вміст: 24 шт./48 шт. стандартний контейнерів для плазми (450 мл). Швидкість заморозки (початкова темература +25°С/+30°С): менж ніж 45 хвилин до мінус 30°С в ядрі заморозки.
Contact shock freezing of blood plasma
Freezing is achieved through direct contact with a surface cooled to -75/-80°C.
For freezing, containers with plasma are vertically lowered into slot-like cells, the walls of which are cooled to at least -75°C.
FREEZING SPEED
Direct contact of the container with the walls of the cells and the power of the compressors minimize the freezing time: <45 min. for 24 or 48 standard containers (nominal volume 450 ml) with a net plasma content of at least 230 ml and an initial temperature of +25°C and +30°C (tests were conducted with containers containing 260 g of plasma each).
The surface of the cells, made of stainless steel, is smooth, without sharp edges, ensuring protection against accidental ruptures or punctures of the containers. Any liquid from the cells is drained using tubes connected to a single drainage system of the device.
The uniqueness of KW technology lies in the combination of the advantages of vertical placement of plasma and the horizontal design of the shock freezer!
TEMPERATURE UNIFORMITY
Minimal change in internal temperature during the loading of plasma containers, as cold air always descends.
FREEZING OF PLASMA IN VERTICAL POSITION
MAXIMUM ERGONOMICS
ENERGY SAVING
Minimal energy consumption due to economical compressors, quality insulation, and horizontal design of the shock freezer.
PROCESS TRACEABILITY (Optional)
The shock freezer can be equipped with an electronic recorder and a barcode reading device; the user can set a working schedule for a single batch of freezing, specifying:
a) individual plasma units;
b) operator;
c) temperature shift curve: all
data is exported in both paper and digital formats, ensuring complete traceability of the freezing batch of plasma containers.
QUALITY OF FROZEN PLASMA
Quality is assessed by the values of fibrinogen concentration, before and after freezing, as well as the concentration of factor VIII.
Recovery of 96% fibrinogen and 81% factor VIII concentration – these are very good results!
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CONSTRUCTION: |
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The doors are mounted on hinges with an ABS-covered lid, automatically balanced. A triple silicone sealing gasket (completely prevents air leakage), heated by refrigerant and has an unlimited service life. A compensatory valve helps balance internal/external pressure, facilitating the opening/closing procedure. |
Wheels: 4 swivel wheels for easy movement of the shock freezer in the laboratory. The handle has a very ergonomic design and locks with a key. KW provides a lifetime warranty on the steel components of the construction.
FREEZING SYSTEM:
COOLING SYSTEM: fully hermetic. The cooling circuit consists of cascade-mounted hermetic compressors (each with a power of over 2 HP), equipped with an MCB (miniature circuit breaker) and a pressure gauge to monitor condensation pressure (MR). The compressors are very quiet: less than 65 dB, and at a distance of more than 3m, less than 55 dB.
EVAPORATION SYSTEM: for high internal temperature uniformity, copper coils that directly expand are thermally connected to the inner surface of the stainless steel shelves.
CONDENSATION SYSTEM: air-type tubular-ribbed condenser with a large surface area; airflow is controlled by an inverter that changes its speed depending on the temperature of the air at the condenser outlet.
THERMAL PROBES (SENSORS): 2 Pt100 type sensors: one is used for temperature regulation, the other in case of emergency (switches to regulation in case of damage to the main sensor).
REFRIGERANTS: the refrigerants are non-toxic, non-flammable, non-explosive, and environmentally friendly (maximally safe for the environment) do not contain HC/HCFC (ODP=0)-R404A in the first stage, R508B in the second stage.
SAFETY THERMOSTAT: in case of damage to the main regulator, when exceeding the maximum safe temperature (regulated and programmed by the user), it disconnects the device from the power supply.
VOLTAGE STABILIZER (optional): to protect the equipment from irregular voltage spikes, extend service life, and prevent operational failures, the device can be equipped with a voltage stabilizer.
TEMPERATURE CONTROL AND MANAGEMENT:
Internal temperature (T) regulation is carried out by a digital electronic control system.
CONTROL PANEL:
ON/OFF control panel, which has an LED display with:
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POWER FAILURE:
In case of a power failure, an alarm signal is provided by an independent power source — a rechargeable 12 V dc 1.2A*hour battery (expected battery life — 3 years), which recharges when power is restored due to power switching.
The alarm signal can be turned off by pressing the BUZZER OFF button.
REMOTE ALARM:
All alarm signals are integrated and connected to a remote signal repetition unit, which has a plug and socket (SA), with the possibility of connecting at the user's discretion (sound alarms and visual signaling devices in the laboratory, remote alarm unit, etc.).
ACCESSORIES:
Separately, it is possible to order the "Open Door" alarm.
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RTS TEMPERATURE RECORDING SYSTEM (ordered separately) |
Контактні шокові швидкозаморожувачі плазми KPFF24B та KPFF48B В комплекті Комп'ютерна Система R…
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