Hanna-instruments HI 901 Manuale Utente Scaricare il pdf (Pagina 135)

A3-3

APPENDIX 3

A3 MULTIPLE EQUIVALENCE POINTS (HI 902 only)

A3.1 Applicability Domain

In case of:

 determining the components concentration from a synthetic mixture (e.g. Mixture of

HCl, CH

COOH, NH

Cl).

 determining the concentration of a polyprotic acid in its titrable ionization stages

(e.g. H

, two equivalence points in aquogenos medium).

A3.2 Perform a Multi-Equivalence Point Titration

With the information provided above, set up the method parameters as follows:

 Set the end point mode as equivalence end point (mV or pH).

 Set the number of equivalence points (up to 5 points) to be found.

 Select the end point determination (like in standard titration).

 Set the rest of method parameters and save the modification.

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Hanna-instruments HI 901 Manuale Utente Pagina 135