Cell Counting Microscope

A variety of cell counting methods exist for exactly this purpose including the hemocytometer.

Cell counting microscope.

Using a pipette take 100 µl of trypan blue treated cell suspension and apply to the hemocytometer. Cells are the basic units of life and contain cytoplasm dna ribosomes and a cell membrane. In that case you will need to multiply your final. Sometimes you will need to dilute a cell suspension to get the cell density low enough for counting.

Cell counting is rather straightforward and requires a counting chamber called a hemocytometer a device invented by the 19 th century french anatomist louis charles malassez to perform blood cell counts. A drop of cell culture is placed in the space between the chamber and the glass cover. When using a light microscope to examine living cells you may want to calculate the cell density. Hemocytometers and sedgewick rafter counting chambers are two types of counting chambers.

The hemocytometer has two gridded chambers in its middle which are covered with a special glass slide when counting. Again multiply by 1000 to determine cell count per ml 250 000. If using a glass hemocytometer very gently fill both chambers underneath the coverslip allowing the cell suspension to be drawn out by capillary action.