Thoma counting chamber

• Total grid: volume: 0.1 µl /side length: 1 mm / height: 0.1 mm
• 16 big squares with 16 small squares each one
• Small square: side length of 0.05 mm / Volume of 0.00025 µl

A drop of the sample, diluted or non-diluted, is loaded between the cell and the cover glass. Then, we count the selected elements in the grid. The result is considered as elements par liter of liquid.