Undercounter Blood Bank Refrigerator

What is the Undercounter Blood Bank Refrigerator?

An undercounter blood bank refrigerator is a compact 2–6 °C cabinet, typically 100–200 L, that fits below a laboratory bench. It suits small hospital blood banks, operating theaters and clinics needing a few dozen units with the same alarm and recording features as larger models.

Overview

The undercounter design places the compressor and condenser at the front or base so the unit can sit under a standard 850–900 mm worktop without rear clearance. Capacity is modest, usually 100 to 200 L, with a single door, a fixed or adjustable shelf set and often drawers for bags. Forced-air cooling and a thermal buffer probe give stable temperatures even in tightly packed cabinets. Because the chamber is small, recovery after door opening is fast but loaded volume is limited, so these units are commonly used as secondary or satellite storage. Built-in audible and visual alarms, a recorder and a lock bring the same control level as upright units in a smaller footprint.

How does it work?

A blood bank refrigerator uses forced-air circulation over an evaporator so that the whole storage volume stays within a narrow band, typically 4 ± 2 °C. A microprocessor controller reads a platinum RTD or thermistor probe, often immersed in a glycol or glycerol buffer bottle that mimics the thermal mass of a blood bag. Independent high/low alarms, a separate recorder probe and a battery-backed alarm circuit are required so an excursion is detected even during mains failure. Door-open and power-failure alarms, sealed glass or insulated doors and an electric defrost cycle limit temperature swings. Platelet units differ: a thermostatically controlled chamber at 22 ± 2 °C holds a flatbed or elliptical agitator that keeps platelets in suspension and gas-exchanging across the bag wall.

What are the key features?

• Front-breathing design fits under 850–900 mm worktops
• Forced-air cooling with thermal buffer probe
• Audible and visual high/low temperature alarms
• Lockable door to restrict access
• Quick recovery after door opening in a small chamber
• Optional recorder and dry contacts for remote alarm

What are the technical specifications?

A typical undercounter blood bank refrigerator configuration offers temperature range of 2–6 °C, net capacity of 100–200 L, blood bag capacity of approx. 60–150 bags (450 mL), dimensions (W×D×H) of 600 × 650 × 830 mm, uniformity of ≤ ±2 °C and refrigerant of R600a. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Undercounter Blood Bank Refrigerator is used in small hospital blood banks, operating theater satellite storage, clinics and emergency units and research blood handling. Across the wider Blood Bank Refrigerators class, laboratories also deploy it for red cell and whole blood storage, platelet storage and agitation and hospital transfusion services.

Which standards and certifications apply?

Relevant standards and methods include AABB Standards for Blood Banks and Transfusion Services, Council of Europe Guide to the Preparation, Use and Quality Assurance of Blood Components, IEC 61010-2-011, IEC 61010-1, IEC 61326-1 and ISO 13485. Certification candidates for this model are CE, ISO 13485 and RoHS; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Place the cabinet away from heat sources and leave the manufacturer's ventilation clearance. Allow the unit to stabilize for 24 hours and run a temperature mapping study, with probes at the corners, center and door shelf, before loading blood. Calibrate probes against a traceable reference at least annually and verify alarms monthly. Clean condensers quarterly and defrost drains as required. Keep a written standard operating procedure for alarm response and a contingency plan for power failure, including transfer to a validated backup unit. Retain temperature records for the period required by the regulator or accreditation body, and never store reagents, food or specimens in a unit designated for blood.

How do I select the right Undercounter Blood Bank Refrigerator?

Select an undercounter unit when fewer than about 100 units are held, bench space is short or a second, dedicated location is needed beside use. Specify the exact height limit, door hinge side, alarm outputs and whether a recorder is built in. For higher stock or long storage, choose an upright model.

How does it compare with other Blood Bank Refrigerators variants?

Start with the component you store: red cells and whole blood need 2–6 °C, platelets need 20–24 °C with agitation, and each needs its own cabinet. Next size the capacity in blood units (a 450 mL bag is roughly 0.5 L with racking) and choose drawers or shelves to match workflow. Check the temperature uniformity and recovery after door opening, since these determine real-world compliance. Decide on monitoring: a chart or electronic recorder, independent alarm probe, remote alarm contacts and network logging. A glass door helps inventory checks but increases heat gain. Confirm the refrigerant and ambient class for your climate zone, and whether the site requires battery backup, lockable doors or integration with a hospital monitoring system.