Laser cell analyzer

A laser counter of biological cells and transparent particles in suspension is developed and a prototype constructed. The counting is based on detection of light scattered from the particles within an angle range of 20-40 C. The selected geometry of the optical system yields a high signal level at a 3 milliwatts power of the laser source and relatively small overall dimensions of the counter. A flow through curvette with hydrodynamic focusing of the suspension assures more rapid counting and analysis rates of the particle providing a potential for studies and for diagnosis of cellular populations by histograms.