New Hobby Ultrasonic Record Cleaning

@garyalex,

10 drops = about 0.5 mL; 1-gal =  3785 mL, so 0.5/3785 = 0.0132%.  I wrote the following as the 1st post of this 2nd page of this thread -  "Tergitol 15-S-9 is a preferred non-ionic surfactant for record ultrasonic machines because you only need about a 0.01 to 0.025% solution for both superior wetting and some detergency and it has a high cloud point. This low concentration equal to 100 to 250 ppm allows you to forgo the rinse step."

So, your 10 drops/gal is in the zone. 

@rajivhifi,

In the same post I referenced above, I also said:  "Triton X100 is a 50-yr design, and is not as efficient - it requires ~4 times to do the same, and because of the high concentration you really need to rinse otherwise you will leave surfactant behind."  Triton X100 you can buy Amazon.  Depending on your system (how resolving is it) and your own hearing (how acute/sensitive) you may not hear the effect of the residue which tends to effect the higher frequencies >5000 Hz.

Thanks for explaining @antinn . I think I'll just go with Tergitol if its better in the long run. 

Thanks Antinn.  I appreciate the information.
@rajivhifi - Agreed about the shipping cost but given how little you have to use it should last a long time.

I always marvelled at how quiet vinyl was at shows. Now it's here. Thanks to you I got one.
Dunno about the price going up they used to be $300. A few drops of Tergotol NP-9 in distilled water works miracles. I can do 9 at once set it for 9 minutes and put the finished on the rack by a small fan. Equates to less than 2 minutes per disc.
Anybody want a Nitty Gritty?

Got mine the same day I packed my system for an upcoming move. I'll report back in a few weeks.