Bottled water, such as purified water and mineral water, can also be used as a rinse solution. As for the question of whether the minerals contained in mineral water can damage OK lenses, I can only tell you that you are thinking too much. The diameter of these metal ions is very small, and will not cause any harm to the OK lens.
Just when buying, please pick a brand with guaranteed quality to eliminate quality risks. Opened bottled water should not be left on for too long, and using a bottle of mineral water for several days in a row is absolutely not allowed. Bottled water is also not the best choice for rinsing lenses.