Laboratory Centrifuge Buying Guide for Hospitals and Labs

A centrifuge spins samples at high speed to separate their parts — for example serum or plasma from blood cells, or sediment from urine. It is one of the most used instruments in a hospital laboratory, so it is worth choosing carefully.

Common types

• Benchtop clinical centrifuge: for routine separation of blood and urine tubes. The most common choice in hospital and diagnostic laboratories.
• Refrigerated centrifuge: keeps samples cool while spinning, for temperature-sensitive samples and some blood bank and research work.
• Micro-haematocrit centrifuge: spins small capillary tubes to measure the proportion of red cells in blood.
• Cyto or specialised centrifuges: for particular techniques; confirm they match your method before buying.

Specifications that matter

• Speed (rpm) and relative centrifugal force (RCF, shown as g): RCF depends on both speed and rotor size, so compare RCF where the method specifies it.
• Capacity: how many tubes at once, and which tube sizes and volumes the rotors accept.
• Rotor type: swing-out rotors suit many routine tubes; fixed-angle rotors are common for faster separation. Check that the rotors you need are included or available.
• Timer and speed control: digital controls make runs repeatable.
• Braking and run-down: how quickly it stops, and whether the brake can be adjusted for delicate samples.
• Noise and vibration: a well-built machine runs smoothly and stays put.

Safety features

• A lid lock that stops the lid opening while the rotor is spinning.
• Imbalance detection that stops the run if the load is uneven.
• Over-speed protection and a sturdy lid.

Using it correctly

Always balance tubes opposite each other by weight, never exceed the rated tube capacity, and keep the rotor clean and dry. Have speed and timer accuracy checked periodically, and replace worn rotors and buckets as the maker advises.

Madina Surgical Trader supplies this kind of equipment to hospitals, clinics and laboratories across Pakistan. Send us your requirements on WhatsApp and we will help you compare options.