LaMotte HARDNESS IN WATER 1606 User Manual

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OXIDATION:

Chemical change caused by oxygen reacting with the

substance.

pH:

Based on the number of hydrogen or hydroxyl ions there are in a

substance. A pH scale is used to determine whether a substance is acidic,
basic or neutral. On the pH scale the midpoint 7.0 indicates a neutral
substance; readings below 7.0 are acidic; readings above 7.0 are basic.

POLLUTION:

The presence of matter or energy whose nature, location

or quantity produces undesired environmental effects.

ppm:

An abbreviation for parts per million. One ppm is equal to one

particle of the substance in a million particles of solution.

PURIFY/PURIFICATION:

The process by which polluted substances are

cleaned. Purification can occur naturally, or by any of several mechanical
means, such as filtration or chemical treatment.

SCALE:

Crusts or flakes which are deposited on the surface of metal parts,

often composed of calcium or magnesium.

SOLUTION:

One or more substances dissolved in liquid.

WATER SOFTENERS:

Special devices which remove minerals such as

calcium and magnesium from the water supply.