Quote Originally Posted by gainer View Post
If I add anything before the metol, it will be a little ascorbic acid. That is to assure that any oxidized Metol that might be in my supply will be regenerated before I add the sulfite.
I suspect that you can add ascorbate to water to remove dissolved oxygen just like you can sulfite. Ascorbate is often used in the lab setting to remove other stronger oxidizers like chlorine.