Premium distilled water for ultrasonic record cleaner

Tomb- it is this stuff: [url]http://www.thermoscientific.com/en/product/nerl-reagent-grade-water.html[url]

It is also available from other third party suppliers for even less than I paid, but check the shipping cost before you order- the shipping price from Fisher to me in NY was almost nothing, and 5 Gallons is pretty heavy. 
Yes, I think Albert uses the same grade of water- in fact, I had him verify what he was using b/c I was tired of paying beaucoup prices for small containers. 

We use to have, at work, small washer to clean flux off PC boards. It looked like regular dishwasher and used DI water for rinsing. Distilled water was not good enough even for that - we had to buy deionizing columns. DI water that you can purchase in store might be good enough for record cleaning.

I use, like Whart, reagent grade water for my record cleaning chores.  While I don't have a fancy US cleaner, I do use it to mix up my surfactant solutions and as my two rinse.  I got mine from Amazon for a similar price as above.
http//www.amazon.com/gp/product/B0018EDGLM?psc=1&redirect=true&ref_=oh_aui_detailpage_o04_s00

5 gallons of Nerl on its way
thanks Whart

IMO, using expensive double-distilled, RO purified, or reagent grade water is probably overkill.  Even distilled water from the grocery store only has a few ppm of impurities, something overwhelmingly contaminated from the junk on your records.  It might be interesting for someone to do a water conductivity study over the course of cleaning records.  I think the best course is to change the water regularly; I change mine about every 25 records. I also wipe off the superficial dust and fibers with a microfiber cloth before cleaning.  If you want to use the expensive ultra-pure water, by all means do so but I would wager its conductivity to increase significantly after only a few cleanings and therefore higher than that of new distilled water.