How to judge the gas coming out of the oxygen generator is oxygen?

When you buy an oxygen generator, you usually pay more attention to its price, the oxygen concentration and its brand, but rarely pay attention to whether the oxygen generator is producing oxygen during use. Therefore, today I will talk to you about how to judge the gas coming out of the oxygen generator as oxygen.
There are mainly three judgment methods:
1. Evaluation by oximeter
If you cannot tell whether the oxygen coming out of the machine is oxygen, you can compare whether the blood oxygen concentration before and after oxygen inhalation has increased. If there is an increase, it proves the effect of the oxygen generator, and therefore proves that the oxygen coming out of the oxygen generator is oxygen. Otherwise, how can the blood oxygen concentration be increased, right? In addition, after we use the oxygen generator for a period of time, our mental state improves, which also shows that the oxygen generator is really producing oxygen, and it will help our body after using the oxygen generator.
2. Judging by physical methods
We all know that oxygen is combustion-supporting, so we can put a toothpick with sparks in the oxygen outlet under the premise of ensuring safety. If the toothpick burns immediately, it proves that the machine is producing oxygen. However, this detection method is inaccurate and has certain risks, so it is not recommended for everyone to use. And it is recommended that when using the oxygen generator, keep away from combustion aids and use it safely.
3. Through professional instrument testing
An oxygen meter can be used to determine whether oxygen is produced, but most families do not have such an instrument. If you really need it, you can buy one and try it.