When boiling water, bicarbonates of calcium and magnesium turn into carbonates, dropping out in the deposit which is postponed in ware in the form of scum. The salt layer of scale is characterized by low heat conductivity, and for heating of water more electric power or gas is used.
It is required to you
- - baking soda;
- - vinegar;
- - hydrochloric acid;
- - citric acid.
Instruction
1. For de-scaling buy ready means - household chemicals offer their wide choice today. As a part of such means weak acids - lemon, sulphaminic, adipinovy and others which when heating as a result of chemical reaction destroy the settled layer of scale with liberation of gas - carbon dioxide contain.
2. Fill up means in teapot or pan with the settled scum, pour water (slightly higher than layer of scale) and you boil within hour. Then drain water, and carefully rinse ware. For more correct use of means read the instruction which is available on packing. If the layer of scale very thick was also not removed completely, then the procedure of cleaning can be repeated.
3. The scum easily is removed also by means of various make-shifts which are available in each house. It is softened and it is easy to remove it if you half an hour boil in ware solution of baking soda in calculation of 100 g on 1 liter of water, and then as much time - acetic essence 100 ml on 1 liter of water are quits.
4. Other way of removal of scum by means of hydrochloric acid (4% solution). The kettle should not be boiled but only to heat to 60 wasps, having left before full cooling. Then merge solution, and carefully wash out teapot or pan, at the same time the scum easily departs from ware walls.
5. The small salt layer easily is removed by means of citric acid - 20 g on 1 liter of water. Boil the prepared solution within 15-20 minutes in teapot or pan with scum, merge it after water cools down therefore ware will be surprisingly clean.