The first such device which resembled the modern hemocytometer was invented by Louis Charles Malassez in 1874 and this was followed by several iterations to make improvements to the design. He created a counting chamber glued to glass slide with markings that correlated the length to volume of sample.

When was hemocytometer invented?

In 1903, W. Brünings of the Pathological Institute of the University of Zürich developed a novel hemacytometer with the ability to mix samples on-chip. The device was connected to a secondary mixing chamber with a pipette and a suction mechanism.

Who invented the hemocytometer?

Cell counting is rather straightforward and requires a counting chamber called a hemocytometer, a device invented by the 19th century French anatomist Louis-Charles Malassez to perform blood cell counts. A hemocytometer consists of a thick glass microscope slide with a grid of perpendicular lines etched in the middle.