Screencast 11.1
www.youtube.com/watch?v=aIn4D2QXUy4
This screencast walks you through the workings of the glass electrode and other ion selective electrodes.

Video 11.1
www.youtube.com/watch?v=Z7e9w3wRvi8
This video clip illustrates the use of an ion selective electrode in the laboratory.

Video 11.2
www.youtube.com/watch?v=08YWhLTjlfo
This video clip gives a simple introduction to gas chromatography.

Video 11.3
www.youtube.com/watch?v=kz_egMtdnL4
This video clip gives a simple introduction to HPLC