@vitussl101 Again, I cannot emphasize enough how important I think it is for all those interested in record cleaning to read "Precision Aqueous Cleaning of: Vinyl Records" at the Vinyl Press. BTW, if you haven't already figured this out, "antinn", a contributor in this thread, is the author of that book. It's not an easy read for non-scientific minds, like me, but definitely worth the time. I tried, as best I could, to incorporate Neil's guidance into my cleaning approach.
That being said, without going into too much detail, here's the method to my present madness:
I use a Knosti Disco Anti-Stat (basically, the same as a Spin-Clean but with goat hair brushes) to pre-clean my records prior to cleaning them in my ultrasonic machine. I fill the Knosti with MOFI SUPER RECORD WASH for this. I think this step can be avoided for records that are already relatively clean. However, for records that are really dirty (I don't have any), I would definitely do this or some kind of pre-clean step. When my MOFI SUPER RECORD WASH supply runs out, I'll fill the Knosti with distilled water and 0.5% Liquinox, instead. All of this is done at room temperature.
After this pre-clean step, I use a basic 6-liter 40 kHz 110-volt machine filled with distilled water and 0.004% Tergitol 15-S-9 set to operate between 27C and 31C and run it for 30 minutes without any records in it. Then, I use equipment I purchased from CleanerVinyl (record spinner; bath filter; record spacers; etc.) to put the pre-cleaned records into the US cleaner. I do 2 records at a time, spaced 1.25" apart and run them at 0.5 RPM for 15-minute cycles making sure the bath fluid temp never exceeds 37C. Then, I use my record lifter device to raise the records out of the US tank bath and let them rotate above the machine at 5 RPM for about 15 minutes to help with drying. After that, the records go into my Knosti's drying rack until they are completely dry.
When I get around to it, I'll invest in a small HEPA air cleaner that I can set up near my drying station to help catch as much airborne dust motes as possible. Also, I intend to purchase a better US machine (i.e. Elma Sonic P60H) at some point to continue tweaking my cleaning approach. On the other hand, I may just say "to hell with it", bite the bullet, get a Degritter Mark II and use the contraption(s) I have now as a pre-clean step and/or final rinse step.
So, Neil, if you're still following this thread, have I learned anything?