Kevin,
Please excuse me for throwing a monkey wrench into this. If the DD pads remove the dirt from an LP do you need to clean them between sides?
Thowing wrenches is fun - good question.
According to the web site:
"Remove residual Cleaner from the brush by gently squeegeeing the upper pile of the pad with the handle of a cleaned nylon toothbrush or your index finger, cleaned & degreased with a little Cleaner."
AND...
"At the end of your cleaning session, rinse the brush pad 2-3 times with fresh distilled water. Saturate the pad with distilled water then remove a portion of the fluid with a gentle squeegee-like action using either a cleaner index finger or the cleaned handle of a nylon tooth brush. Repeat 2-3 times. Finally shake brush strongly 1 time to remove excess water then place brush with pad facing up & allow to air dry."
Pretty much what I do, seems to work. The LPs get a ride on the Nitty Gritty to end up.
I have never tried doing more then 4 to 8 LPs at a session. Might see some contaminated brush pad issues, assuming they happen, if I ran a dozen or more LPs at a rip,...maybe.
Oh, and I run stuff on the Nitty Gritty first, try a play and only if I think the LP sounds like a deeper clean might help then I set it aside for a Disc Doctor brush session. Once I have a few Discs in the "skunk" pile I do a session. So the Nitty Gritty has already eaten the grottiest particulates.