I just bought a ultrasonic cleaner and tryed it with not good results.i put 3 cups of distilled water and 3 cups of white vinegar and couple drops of dawn dish soap.did 3 cycles of 480 sec and after that the cases were still dirty.then put a little more dish soap and put it for anotheer 480 sec.after that the water was so dirty that i couldn't see the brass.but when i removed the brass they were stain looking.blue and purple stain looking.then drained water and refilled with 6 cups of water and 96 grains of bakeing soda for another 480 sec .far way from being shiny brass.what am i doing wrong.thank you forgot to mention that the cleaner has a heater and i was using that to

Use a cleaner designed for an ultrasonic. Magic Green and PROsonic are what I use in the shop. I use water straight from the tap and no vinegar.

My only current problem with US cleaners is that I can't find a sucker in the neighborhood to buy mine--and the leftover chemicals and the oil..................

I use the Hornady or Lyman solutions. The active ingredient is mainly citric acid and they work just fine in my Lyman unit. It’s possible that your unit isn’t working right.