Hanna Instruments HI 901 - Manual (Page 73)

5-33
METHODS
Titrant Concentration:
The units for titrant concentration can be:
mol/L (concentration unit of titrant)
eq/L (concentration unit of titrant)
g/L (concentration unit of titrant)
mg/L (concentration unit of titrant)
One of the general factors should be used as a stoichiometric factor, the other as unit
conversion factor and the third as weight conversion factor.
Chemical combination factor:
The chemical combination factor is the chemical combination ratio between the analyte and
titrant or standard and titrant.
In the particular case that the combination ratio is expressed in moles, this factor is called the
stoichiometric factor.
This factor can be one of the following:
mol/mol (moles of sample/moles of titrant)
mol/eq (moles of sample/equivalence of titrant)
eq/mol (equivalences of sample/moles of titrant)
mol/mol (moles of titrant/moles of standard)
eq/mol (equivalences of titrant/moles of standard)
Examples: 2 moles of NaOH react with 1 mole of H
2
SO
4
Unit Conversion factor:
Used to convert between various measurement units.
Examples:
L/1000 —> mL
g/1000 —> mg
Weight Conversion factor:
Used to convert between weight measurement bases (Kg, g, mg, µg or mole, mmole).
Example:
g —> mol