Hello!
I am honored to read your question. Although the solar liner is made of food grade SUS304 stainless steel, for health reasons I cannot drink it. It's not a question of hygiene. the coating. The contents of the water tank. All the bile indicators passed the test, and it was a water problem.
Are you thinking about it?
Will you dare to drink the water from the thermos bottle that has been in it for more than 3 days? Why class? Leaving hot water for a long time is likely to produce nitrites, which are harmful to your health. Thermos bottles are just thermal insulation containers, while solar water heaters continuously heat water to a high temperature for a long time. Most people cannot guarantee that the water will run out on the same day. water.
Bacteria are easily produced when the water is around 34 degrees Celsius.
So I don't advocate drinking water from solar water heaters, I suggest my friends to use hot and cool water.