Principle

Amino acid molecules carry both acid and amino groups. They can therefore form both acidic anions and basic cations. The pH at which these two types of iones are both present in the same concentration is called the isoelectric point.

Benefits


Compact, easily transportable setup

For both demonstration and student experiments

Flexible experimenting thanks to wireless data transmission

Additional experiment in plant physiology and biochemistry can be performed with few modifications

Data acquisition with tablets possible

With detailed experiment guide



Tasks


This isoelectric point is to be determined by recording the titration curve for different amino acids.


What you can learn about


Isoelectric point

Acidic anions

Basic cations

Zwitterions

Equivalence (inflection) points

pKs value

Titration


Software included. Computer not provided.