Thumbs up for ultrasonic record cleaning

No worries @slaw  - If you prefer a DIY system that includes rinsing, go for it.  With a TDS meter reading of 40-59ppm I certainly would rinse.  It's good you're using a meter.

In the context of my DIY setup, rinsing is an unnecessary time-consuming step.  When I pull records out of the cleaning tank the water on them consistently measures 003-005ppm so no need to rinse.  I change the USC tank water if that number goes higher - that's typically after 65-75 records or so.

Each spends his time as he will. I confess I'd rather listen to music than clean records. 

@jtimothya ,

I’m using distilled water. What are you using?
..................................
I just testing clean distilled...showed 0 ppm
Versa-Clean undilluted...showed 1358 ppm

I miswrote...Versa-Clean ...showed 3189 ppm undilluted.

I think next time I replace the water, I'll check the new mixture with my meter and go from there.

@slaw - Into ~2.75 gallons distilled water I add 1⅓ cups 99% pure Isopropyl Alcohol (roughly 3%) and 0.9 tablespoons of Ilfotol (wetting agent used in final rinse of photograph development.)  In a fresh tank that combination checks out at ~0002ppm.  It stays low thanks to continuous filtering at 0.35 microns.

I agree - always a good idea to to do a TDS test on anything under consideration as a cleaning agent, both by itself and diluted. 

@jtimothya 

Dripping overnight allows the sediment to settle out. Almost all of it.