I have always used reverse osmosis, deionized water I buy at Culligan for 50 cents per gallon in my VPI and Loricraft RCM. It has worked great. I use it as a final rinse and also for mixing cleaning fluid concentrate. Never had a problem. I'm also using it in my Audio Desk Systeme vinyl cleaner. I don't see how RO deionized water can hurt the AD or any other vinyl cleaner.
Am I missing something?
Laura
P.S., there is nothing on the Audio Desk Systeme website or in the owner's manual suggesting that one should not use RO, deionized, lab grade or ultra pure water. There is however, a strong caution not to use any other cleaning fluid and using a different fluid can void the warranty.
Laura: I don't think you have anything to worry about using RO/Deionized water in your AD. There is not much in it between that and "once distilled" water as mentioned by Yikes.
There is, however, a pretty big difference between RO/Deionized or "once distilled" that you buy from Culligan, Walmart or your local pet store for 50 cents a gallon and high purity lab grade or ultrapure water.
If you look at Type 1 Reagent Grade Water, the best price you'll pick it up for commercially (in bulk if you are buying 5 gallons) is around $10 gallon. Ultrapure is even more pure, and, as a result, more expensive. Ultrapure, for example will typically involve 7 processes (some repeated) including, softening, activated carbon filtration, micro/ultrafiltration, ultraviolet radiation, reverse osmosis and deionization all done in a certain order to achieve "ultrapure" status.
The result is that ultrapure water is an extremely aggressive solvent that leaves no residue and is used in commercial applications where "cleanest of clean" is demanded. As a result, it's also very effective in cleaning records. But it might also be hard on rollers, etc. in the AD, particularly, as I mentioned earlier, if the fluid is left to sit in the AD over a long period of time. So that might be a concern.
If you're using RO/Deionized in your AD, you really have no worries.
