I believe John adams sunnyvale is asking about a product that has undergone an extremely more rigorous purification process than either RO or distilled water commonly available for sale in grocery stores. The ultrapure water is likely used in special laboratory processes. John, you might consider determining the uses for the ultrapure water, then contacting local area firms who do that type of work to determine their source. If you are simply looking for a gallon of the stuff to try, maybe one of the firms would sell you a gallon. If you are looking for a long-term source, maybe if you find out what supplier the local firms use, you could set up your own account with that supplier and they could drop off an occasional shipment to your residence or workplace since they already deliver in the area. Or, you could see what Albert comes up with and order from the source he uncovered. Let us know how it works for you.
Finding ultra-pure water locally...
I've been reading up on record cleaning, and there seems to be something of a consensus that rinsing with ultra pure water / lab-grade water / triple distilled water (I'm assuming these are just different names for essentially the same thing?) helps. Where does one buy such water locally? I would imagine paying postage to ship 10 lbs of water would be rather high. I'm in the San Francisco Bay Area. Tks!
John
John