-> This is useful for patients requiring continuous intake of oxygen such as those with COPD, ILD and/or those requiring support in end of life conditions/events. -> At 2 lit/per min, it lasts for up to 10/12 hours after which it requires to be refilled. This is to be used under guidance of a consulting physician only. This can give a maximum of ___ liters per minute. -> It is provided with required valve fittings, flow meter, humidifier bottle and spanner and stand with casters. -> It does not require any power to use so is ideal for situations as a back up where power supply is likely to be interrupted. -> Please note this product is not a life saving device but only an assisting device and is ideal for home use as it requires less space for storage and is very simple to use. -> Pure oxygen is flammable hence please keep away from fire sources like heaters, electrical sparks etc. Do not smoke anywhere close to the cylinder.