An oxygen cylinder is essentially a vessel that stores oxygen. When it is used in medical facilities or at home, they help to deliver supplemental oxygen to patients who cannot get the needed amount of oxygen on their own (these levels can be checked using a pulse oximeter).
*Kindly note the prices above are estimates and NOT exact. They will help you to plan a budget. Prices are affected by factors like Size, Availability, Quality of Material, Brand, Make, Forex Rates.