Generally, hydrogen with a concentration of more than 99.9% can be obtained by electrolysis of pure water. We set the gas flow rate of the hydrogen absorption machine to be 300-500ml/min, and the weight of adults is about 60-80kg. According to the breathing gas calculation formula, the concentration of hydrogen entering the body each time is 1.5% - 2.5%, which is consistent with the concentration found to be effective for disease recovery.

In a word, a device with a hydrogen production flow of 300-500ml per minute can achieve effective therapeutic hydrogen inhalation. On the basis of safety, appropriately prolonging the hydrogen absorption time can obtain better disease improvement effect.