What devices have you found useful when inspecting your stylii for cleanliness?

If your SQ is only CD-like, you have a way to go. Hi Rez streaming is a legit alternative to vinyl, but, IMO, high quality vinyl has it all over RBCD.

De nada.

At least RB got what he expressly said he didn’t want, recommendations for how to clean not only styli but LPs too. 

RB wrote, "my current tone arm is a fixed head-shell design so I cannot easily get a good viewing angle - the arm does not tilt much."  Do you really think one can inspect the rear of the stylus and the cantilever (which also can accumulate dirt and debris) without removing the cartridge from the headshell, in that situation?  All the magnification in the world is not going to allow a good view of the back end of the stylus and cantilever.  With my Triplanar, I can flip the headshell over on its back for inspection of the stylus/cantilever, without removing the cartridge from the tonearm or altering the azimuth (once the cartridge is reverted to playing position), but this does not seem to be possible with RB's tonearm.

And obviously a magnifier of some sort. Shop glasses with built in magnifying lenses work. But more mag power is better. Anyway you can’t possibly get a good look without dismounting the cartridge if tonearm has fixed headshell.