What is the ideal fluid and setup for observing Magnetohydrodynamics?

[SCHROEDERFPM]

TL;DR

Looking for knowledge and insight about the topic and simple setups to observe this phenomenon.

I have been reading about Magnetohydrodynamics and would like a bit of insight from anyone who has any knowledge on the subject.

If I understand correctly when a conductive fluid is in motion it produces an electric field, and motion can be generated using a few methods one of which is a magnetic field.

I would like to know if there is any way I could setup a basic experiment to observe this phenomenon.

-Would mercury be the ideal fluid?

-Is salt water affected by magnetic fields?

 

[Baluncore]

-Would mercury be the ideal fluid?

-Is salt water affected by magnetic fields?

Mercury should be avoided. It evaporates, and is toxic.

Salt water can be accelerated by a current and a magnetic field.
https://en.wikipedia.org/wiki/Magnetohydrodynamic_drive

Magnetic flow meters produce a voltage across a channel in which a conductive fluid such as water is flowing.