Glass-water bottle that is temperature-controlled, if washed incorrectly, is no different from “culturing germs”, even if it is only used to store plain water that does not appear to be dirty.
Some people believe that a glass or thermos that is used to hold hot or plain water is sufficient to simply wash it. However, Dr. Chen Chongxian, a family medicine physician has warned that if it is used for a long time without being properly washed. A slippery film will form. Which is a “biofilm” caused by accumulated microorganisms. If there are pathogenic bacteria in it, it can affect health. Therefore, even if only hot water is used. It must be washed and dried regularly.

What is biofilm?
Dr. Chen explained that “biofilm” is formed by mucus secreted by microorganisms and accumulates on the surface of living or non-living things, such as dental plaque. Which is an example of biofilm, or in non-living things, such as the sticky residue in the water tank of a dehumidifier. All moist surfaces are likely to develop biofilm, whether it is a thermos, water bottle or glass. It does not depend on the material of the container, because general drinking water is not 100% sterile, and our mouths. Which touch the mouth of the bottle every day, already contain bacteria. In addition, some children drop food scraps into the water bottle, which are all breeding grounds for bacteria.
Therefore, hot water bottles used in daily life should be washed and dried regularly to avoid contamination of drinking water, especially because biofilms often consist of various types of microorganisms. If there are pathogenic bacteria in it. It will be harmful to health.
Proper cleaning method
Tan Dun-ci, a nurse specializing in detoxification. Advises against thinking that simply putting water in it and rinsing it thoroughly will be enough. As an examination has found that improperly washed hot water bottles are full of bacteria.
The best advice is to “wash after every use”, especially the cap เล่นบาคาร่า UFABET เว็บตรง ค่าคอมสูง area. Also, a weekly deep cleaning using sodium percarbonate is recommended. Here’s how:
- Prepare warm water in a pot.
- Add sodium percarbonate powder.
- Soak a thermos in it and leave it for a while.