I have this water bottle that I use at home which I use constantly. I refill it with tap water frequently but every time I open the cap, I see this white residue gathered . What is that and is it safe for me to use that bottle again?
In: Chemistry
Hard to tell, but it’s likely water that evaporated, leaving behind minerals present in the water. Could also be mold but that has a very different appearance. And really shouldn’t ever happen unless you’re not washing it at least every few days. And you really should wash it once a day.
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