👉 Nephelometer is a device used to measure the concentration of nitrogen in the blood. It consists of a thin, flexible tube that is connected to a catheter or needle through which nitrogen gas is injected into the body. The nitrogen gas diffuses from the lungs to the bloodstream and binds with hemoglobin molecules in red blood cells. This results in a reduction in the amount of oxygen available for the body's tissues, leading to hypoxia (shortness of breath) or an increase in