Negative Potentials in Potentiastats?

[Iwikefactz]

What does it mean for a potentiastat to apply a negative voltage between the reference and the working electrode? I know the voltage is changed by current injection at the counter electrode. Please explain

[fiveworlds]

I have never even heard of one before.

[Iwikefactz]

I'm being told that positive volts means oxidization and negative for reduction. how exactly does this ork then?