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Test Hydrogen Peroxide Shelf Life
Test the effectiveness of hydrogen peroxide
It is called hydrogen peroxide, which is often used by doctors for disinfection and chemical bleaching. However, its properties are changeable, and the effect will be reduced if it is left for a long time. Therefore, it is important to test its effectiveness and shelf life.
To test whether the effect of hydrogen peroxide is still good, there are various methods. First, take a clean test tube, inject a small amount of hydrogen peroxide into it, and add a little manganese dioxide. If there are bubbles escaping rapidly, and the excess wood strips reignite at the nozzle, it is proved that the effect of hydrogen peroxide still exists. This is because hydrogen peroxide meets manganese dioxide, quickly decomposes into water and oxygen, and oxygen supports combustion. It is reignited with wood strips.
As for the shelf life of hydrogen peroxide, check its packaging first. Look at the production date and shelf life indicated on the label. This is the first way to judge. However, the temperature, humidity, light, etc. of the environment can affect its actual shelf life. If stored in a high temperature and light place, although it does not exceed the label period, it may also lose its effectiveness. On the contrary, it can be placed in a cool, dark, dry place, or it can be extended when it is effective.
Also, if hydrogen peroxide is used for a long time, its appearance can be observed. If the clarified liquid becomes turbid, or there is precipitation or discoloration, it is suspected that its quality has changed, and the effect may not be good. However, the appearance is the same, and it cannot be fully trusted that its effect is the same as before, and it still needs to be verified.
Testing the effectiveness and shelf life of hydrogen peroxide is related to the safety and effectiveness of use. Operating this business, you must not be careless.
It is called hydrogen peroxide, which is often used by doctors for disinfection and chemical bleaching. However, its properties are changeable, and the effect will be reduced if it is left for a long time. Therefore, it is important to test its effectiveness and shelf life.
To test whether the effect of hydrogen peroxide is still good, there are various methods. First, take a clean test tube, inject a small amount of hydrogen peroxide into it, and add a little manganese dioxide. If there are bubbles escaping rapidly, and the excess wood strips reignite at the nozzle, it is proved that the effect of hydrogen peroxide still exists. This is because hydrogen peroxide meets manganese dioxide, quickly decomposes into water and oxygen, and oxygen supports combustion. It is reignited with wood strips.
As for the shelf life of hydrogen peroxide, check its packaging first. Look at the production date and shelf life indicated on the label. This is the first way to judge. However, the temperature, humidity, light, etc. of the environment can affect its actual shelf life. If stored in a high temperature and light place, although it does not exceed the label period, it may also lose its effectiveness. On the contrary, it can be placed in a cool, dark, dry place, or it can be extended when it is effective.
Also, if hydrogen peroxide is used for a long time, its appearance can be observed. If the clarified liquid becomes turbid, or there is precipitation or discoloration, it is suspected that its quality has changed, and the effect may not be good. However, the appearance is the same, and it cannot be fully trusted that its effect is the same as before, and it still needs to be verified.
Testing the effectiveness and shelf life of hydrogen peroxide is related to the safety and effectiveness of use. Operating this business, you must not be careless.
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