Concentration

The concentration is in accordance with DIN 1310, a content specification, which is based on the volume of the mixture. The concentration therefore indicates how much of a substance ( the considered solvate ) is present in a reference volume of the mixture ( solvate and solvent). Solvate and solvent can have various states and for the mixture to be polyphase; then solvate and solvent even in the same fabric can be. In addition to the consideration solvate for which the concentration is specified, also other solvates present, the solvent or the solvate may be mixtures themselves.

Concentration data:

• The amount of substance concentration, or ( linguistically easily confused with molality ) molarity: moles of solvate per volume of the mixture, unit mol / l
• The equivalent concentration or normality is a special form of the molar concentration; this is the amount of substance unit mole refers to Äquivalentteilchen. , ie virtual fragments of real particles to account for the chemical valence, Maßeinheitl mol / l, outdated eq / l
• The mass concentration: defined as the mass of the solvate per volume of the mixture, Unit g / l
• The volume concentration: Defined as the volume of the solvate per volume of the mixture, unit l / l; is not equivalent to the volume fraction, which is based on the sum of the volumes of all fractions.
• The particle density or particle concentration: Defined as the number of particles or of particles per volume of the mixture, 1 unit / l

These names for related variables as the quotient of mass, volume, amount of substance or particle of a substance and the volume of the mixture in which the substance is the norm DIN 5485 Designation follows principles of physical quantities; Compound words with property and basic words.

Often with the short form " level" means the amount of substance concentration, and sometimes the mass concentration meant.

In addition, there are other salary data.