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Answer:

Ethyl alcohol, also known as ethanol, is a commonly used disinfectant because of its ability to kill a wide range of microorganisms, including bacteria, viruses, and fungi.

The reason why ethyl alcohol is so effective at killing germs is that it disrupts the cell membranes and denatures the proteins of the microorganisms. This leads to the leakage of cellular contents and the death of the microorganisms.

The 99.99% effectiveness of ethyl alcohol in killing germs is based on the fact that it can eliminate the vast majority of the microorganisms present on a surface or in a solution. However, it is important to note that some microorganisms may be resistant to ethyl alcohol, and certain viruses may require longer exposure times or higher concentrations of the disinfectant to be fully eliminated.

Additionally, proper usage and application of the disinfectant are also crucial to ensure its effectiveness. For example, the surface to be disinfected should be cleaned before the application of the disinfectant, and the disinfectant should be left on the surface for a sufficient amount of time to allow for complete disinfection.

Answer:

To prevent more buyers and increase cause if they put in perfect some people might have an argue because 100.00% kìll germs but why it dles have still a germs?? so they put it 99.99% to prevent buyers and increase

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