I own an aquarium shop in Michigan. We use RO water in our reef tanks. I also use the water as a rinse on my VPI record cleaner. It works very well. I don't know anything about ultra-pure water, but I find it difficult to believe that it can be significantly superior to RO-DI water in purity. I regularly check our RO filter with a TDS (Total Dissolved Solids) meter. Our water fluctuates between 0-4 mineral PPM... I don't think that anything purer will make a significant difference for record cleaning applications. Laboratory applications? I wouldn't know...
Our shop sells RO water, 39 cents per gallon... We don't ship the stuff.
Cheers,
Ivan
Our shop sells RO water, 39 cents per gallon... We don't ship the stuff.
Cheers,
Ivan