In this experiment, regarding sterilization, the copper plate was the best sterilizer among bleach, copper, carbonated water, pure rice vinegar, citric acid, soap, and baking soda. However, since the copper plate here is a copper plate that has been washed cleanly, it is advisable to wash the 10-yen coin cleanly when actually using it for sterilization. From this, we think that the red gerbera is the best in our two years of experimentation to put 5 grams of granulated sugar and a cleanly washed 10-yen coin in 100 ml of water. I will.
I experimented for two years. In the first year, I researched nutrition and found that granulated sugar was the best choice. Then, in the second year, I investigated sterilization, and as a result, copper had the most sterilizing effect and led to life extension. However, as you can see from the first experiment, it was found that clean copper that was washed is the most effective for sterilization.