Tap water is one of the best protected foodstuffs – in Germany it can be drunk without the slightest risk. Yet it is not good enough for FINESTFOG air humidification systems: magnesium and calcium – the hardeners in water – cause calcification. Moreover, these minerals do not evaporate but instead are precipitated. High dust load and air opacification follow. The solution is FINESTFOG water treatment systems that produce water of the highest purity that is virtually free of salt and bacteria.