Oxygen air mixers are devices used to increase the concentration of oxygen in the air and for respirators or oxygen therapy. These devices are often used in medical settings, hospitals, ambulance or at home. Ensuring the correct concentration of oxygen plays an important role in the treatment of individuals experiencing respiratory failure. Air blenders are special devices that draw oxygen from the atmosphere and produce air with a higher concentration. This process usually occurs by membrane technology or adsorption method. Oxygen air mixers come in a variety of types, from portable models to fixed systems that can be adjusted to suit patients' needs. These devices improve the quality of life of individuals receiving oxygen therapy, support respiratory functions and ensure effective use of oxygen.