An oxygen tank contains pure oxygen that's used to assist people with breathing difficulties, whereas a nasal cannula is a device that's used to deliver supplemental oxygen to the nose and mouth.
A manual resuscitator, also known as an Ambu bag, is a device used to provide positive pressure ventilation to individuals who are not breathing or have insufficient breathing.
There are several different types of disposable face masks available on the market, and the best one for you will depend on your specific needs and preferences. Some popular options include:
