@antinn I’m not going to argue with you about chemicals and processes. As I have said repeatedly that your system must work for a few records at a time. You yourself have stated that. It’s when you try to scale that to 20 or more records it becomes a formidable task, even when using US. In the research I did, reading the multitude to threads as I am sure did as well, I was trying to overcome the fear of ruining a record while having the desire to eliminate the noise I had from smoke and other dirt. You were probably still scrapping crud off of submarine oxygen tubes at that time.
I know that you are the de-facto resident expert, as no one has challenged you. But you’re just a guy like me trying to enjoy his records. I’ve written and published technical guides and manuals that were distributed world-wide by The Coca-Cola Company. I have enough humility to not think that is a big deal.
My cartridge, a Sound-Smith Heliios, is a very sensitive and linear device. I went through many different systems and chemicals for cleaning with poor results until I started using the Walker 4-step, then the Rush Paul system. I don’t hear any noise from the older used records. The blacks are blacker and deep. That was my goal and objective. When I used your chemicals either manually or in the US I did not get the same results. Also, I did.not need special assistance amounting to hours to get it right.
I am not criticizing your system. It simply does not work for me. Don’t be so sensitive, show some humility and accept that this boy ain’t gonna buy it.