For patients undergoing heart problem, lung ailment or shortness of breathing, the use of Pulse Oximeter becomes a necessary device. This is an electronic device that measures the saturation of oxygen carried in red blood cells. The frequent measurement keeps the patients updated of his health conditions. In order to secure measurement, this device is attached to fingers, forehead, ears, nose, foot, or toes. A reading of 95% or higher is normal level of oxygen and this machine helps patients, especially during COVID-19 it became a mandatory device. You can search Ravi Bio Impex for the best quality Pulse Oximeter.