Rsrex,
I think it can be debated whether plain distilled water is good enough for the steamer. It probably is. As far as the rince goes though, I think it's best to stay as pure as is feasible. I accidently splashed some of my reagent grade water on my bathroom mirror, didn't wipe it off and when it dried it left no trace of water mark at all. This little incident gives me the peace of mind that after a double rince the residual water after vacuuming is leaving as little residue on the surface as it dries as possible. Try leaving some of your RO water on glass to dry and see if it leaves a residue. If it doesn't it's probably as effective as the reagent grade for the purpose of cleaning records. Of course, the sonic effects of any residue left by water may be another area of debate.
I think it can be debated whether plain distilled water is good enough for the steamer. It probably is. As far as the rince goes though, I think it's best to stay as pure as is feasible. I accidently splashed some of my reagent grade water on my bathroom mirror, didn't wipe it off and when it dried it left no trace of water mark at all. This little incident gives me the peace of mind that after a double rince the residual water after vacuuming is leaving as little residue on the surface as it dries as possible. Try leaving some of your RO water on glass to dry and see if it leaves a residue. If it doesn't it's probably as effective as the reagent grade for the purpose of cleaning records. Of course, the sonic effects of any residue left by water may be another area of debate.