Dionex ASRS suppressor 2mm use with a 4mm column and more...

[lgchrom]

I have this 2mm supressor and I want to use a 4mm column. I assume the only difference between the two suppressors (2mm and 4mm) is the capacity of supression. The 2mm is capable up to 1mL/min according to its specs. My application needs just 1ml/min. Will I be ok using the 2mm suppressor? Any drawbacks you could think of? I would rather not buy a new suppressor...

Also any suggestions for good reliable and robust columns that have reasonable pricing for common anions and cations (non suppressed).

Thanks

[lgchrom]

anyone that could hep on that?