|
CALCIUM HARDNESS COLORIMETER OVERVIEW
Hardness
originally referred to the ability of water to lather with soap. The
more calcium and magnesium ions present, the "harder" it was to
produce a lather.
Both the Calcium and Magnesium colorimeters are needed to determine Total Hardness. Water contains dissolved salts (magnesium and calcium carbonates). The concentration of these salts determines the water hardness, which can be expressed in calcium carbonate or in magnesium carbonate. The sum of these two represents the total hardness level. Both Hardness Colorimeters are supplied with 2 Cuvets (sample tubes), 9V battery and instruction manual.
Water, with exception of distilled
water, contains dissolved salts (Magnesium and Calcium carbonates). The
concentration of these salts determines the water hardness, which can be
expressed in Calcium carbonate or in Magnesium carbonate. The sum of
these two represents the total hardness level.
The presence of dissolved salts is due to
the fact that water often comes from underground sources which are in
turn made up of rainfalls filtered in the deep ground layers. They
eventually reach a waterproof flooring and form a natural tank which is
also called a water bearing stratum.
By passing through the various layers of
soil and rocks, rain water dissolves some of the mineral substances.
Hardness is a consequence of the ty0e of rock layers which the water
passes through and of its permanence in the water bearing stratum.
In addition, this parameter is also related
to the phenomenon of pipe rusting in water heating and cooling systems,
reverse osmosis and demineralization plants. |
