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Also called: Cell counter, Blood cell counter

Blood Cell Counter: Automated Cell Counters Explained

“Cell counter” can mean a clinical blood cell counter or a research cell counter for cell culture. Here is how to tell which one you need.

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Two very different machines

Blood cell counter (haematology analyser)Laboratory cell counter
SampleEDTA whole bloodCell suspensions from culture
OutputFull blood count with differentialCell concentration and viability
UsersClinics, hospital and pathology labsResearch, biotech, IVF and stem-cell labs
RegulationIVD medical device — MDA registrationUsually research-use-only equipment

How a blood cell counter works

Blood is diluted and drawn through a narrow aperture. Each passing cell creates an electrical pulse sized to its volume (the Coulter principle), which the analyser counts and sorts into red cells, white cells and platelets.

Manual counting is still the reference

Before automated counters, cells were counted under a microscope on a haemocytometer. Labs still use manual films to check flagged automated results.

Frequently asked questions

Is a cell counter the same as a haematology analyser?
In a clinical setting, yes — “blood cell counter” is another name for a haematology analyser. In research, “cell counter” usually means a different instrument for cell-culture counts.
Do you supply research cell counters?
This site focuses on clinical haematology analysers. Tell us your application and we will tell you honestly whether we can help.
What is the Coulter principle?
It is the impedance method: cells passing through a small aperture change its electrical resistance in proportion to their size, so they can be counted and sized.

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