Philips WP4161/90 User Manual page 18

English
Notes
The tap water ltered by the water ltration system will produce a little
scale (white sediment) due to the di erence in water hardness during
the boiling process. This is a normal phenomenon and harmless to
human health.
The tap water contains minerals and trace elements that the human
body cannot self-synthesize, such as magnesium, calcium, etc. During
the boiling process, when the water temperature rises above 70°C, the
calcium and magnesium ions dissolved in the water will combine with
the carbonate ions to form the calcium carbonate and magnesium
carbonate deposits, i.e. scale.
This is a normal physical properties of water. The water ltered by the
Philips water puri er still retains the minerals that are good for human
health, which will produce natural scale after boiling. Di erent from the
puri ed water after reverse osmosis ltration, since the minerals in the
water have been ltered and removed, the water will not produce scale
after boiling.
Scale is a natural deposit of minerals after boiling, which has no harm-
ful e ect on human health. Please drink with peace of mind!