The impetus to use hyper clean water for record cleaning predates the ultrasonic machines.
https://forum.audiogon.com/discussions/finding-ultra-pure-water-locallyhttp://
That's a thread from 2008 that discusses the topic and NERL water. Part of the problem with buying fancy water is the cost of shipping it while buying enough to be cost effective. And of course some brands charge a lot more; generally water from record cleaning solution manufacturers is much more costly. Five gallons is roughly 44 lb. to ship (unless the container is glass, then it's lots more.) In '08, I was buying 5gal of NERL 9805 Reagent Grade Water at $34 shipped, but I could have paid more. It pays to shop around. And be cautious about interpreting different grades and costs as one being superior than the other. Compare the labels.
https://forum.audiogon.com/discussions/finding-ultra-pure-water-locallyhttp://
That's a thread from 2008 that discusses the topic and NERL water. Part of the problem with buying fancy water is the cost of shipping it while buying enough to be cost effective. And of course some brands charge a lot more; generally water from record cleaning solution manufacturers is much more costly. Five gallons is roughly 44 lb. to ship (unless the container is glass, then it's lots more.) In '08, I was buying 5gal of NERL 9805 Reagent Grade Water at $34 shipped, but I could have paid more. It pays to shop around. And be cautious about interpreting different grades and costs as one being superior than the other. Compare the labels.