Apogee Flow Asia Ltd. products

Conventional flow cytometers on the market today may be able to resolve 200nm diameter polystyrene beads by light scatter but they will fall close to the instrument’s sensitivity limit and polystyrene is far more refractive (refractive index approximately 1.59) than biological particles (refractive index typically 1.40). For example, a 400nm biological particle may scatter about the same as a 200nm polystyrene bead. Conventional flow cytometers are therefore not suitable for measuring light scattered by biological particles less than about 400nm diameter.