Coulter Counter

A Coulter Counter is a scientific instrument used to count and measure tiny particles, like cells or blood cells, as they pass through a small, electrically conductive chamber. When a particle moves through an orifice between two electrodes, it temporarily changes the electrical resistance, creating a small pulse. These pulses are counted and analyzed to determine the number, size, and sometimes other properties of the particles. It's a precise, efficient method widely used in medical and research laboratories to analyze cell populations quickly and accurately.