The testing process in a hospital’s laboratory using a low-speed centrifuge.

Release time:

2014-01-14

Overview:

Hospitals’ blood banks, blood stations, and clinical laboratories all use centrifuges. Generally, they don’t rely on imported centrifuges, and the typical rotational speed is around 4,000 to 5,000 rpm—making these low-speed centrifuge models.

The hospital’s blood bank, blood storage facility, and clinical laboratory all use centrifuges. Generally, they don’t rely on imported centrifuges, and the typical rotational speed is around 4,000 to 5,000 rpm—making these low-speed centrifuge models.

Many patients go to the hospital, where doctors draw blood and collect it in vacuum blood collection tubes, which are then taken to the laboratory for testing. Those who pay close attention may notice that most doctors place these vacuum blood collection tubes into a centrifuge for centrifugation. The following describes the process of using a centrifuge in a hospital’s laboratory.
　
　　First, after the doctor receives the blood collection tubes, they will place them on a rack designed for vacuum blood collection tubes. Once a sufficient number of tubes have been collected, they’ll be transferred to a centrifuge for spinning. It’s essential to use an even number of tubes, as a single tube cannot be centrifuged. During the centrifugation process, the centrifuge needs to maintain balance. Although some centrifuges are equipped with automatic balancing systems, it’s still not feasible to centrifuge just one tube—only when the weights of the tubes are relatively close can the centrifuge operate normally. The centrifuge generates tremendous centrifugal force during operation; if the load is unbalanced, it could lead to accidents. All Boling centrifuges are equipped with protective devices that prevent them from operating normally under unbalanced conditions.
　　
　　Therefore, when doctors place test tubes into the centrifuge, they always do so in a symmetrical manner. The typical setting time is 5 minutes, with the rotation speed set at around 5,000 revolutions per second—unless otherwise specified for particular tests. After starting the centrifuge, the rotational speed gradually increases until it reaches the preset value. Once the preset time has elapsed, the centrifuge will automatically stop. Due to inertia, the centrifuge’s speed will slowly decrease from the set value rather than coming to an immediate halt at zero. Thus, after the centrifuge has stopped, the door cannot be opened right away; it must wait until the centrifuge’s speed has completely dropped to zero before the door can be unlocked. Centrifuges manufactured by Boling will highlight the current rotational speed on the screen. When the speed reaches zero, the door will open automatically, allowing the doctor to remove the centrifuged blood collection tubes, place them onto a tube rack, and then send them off for further analysis.

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