Atomic absorption will tell you also as well mass spectrometry.

we use it a lot doing analysis on fluids. 

Maybe a better question would be to ask..and verify, IF a reduction in SQ is heard by any of these ’deposits’...and then IF the answer is ’yes’ to go about a more scientific process of ’cause and effect’...rather than assuming anything! Just IMHO.

I am sure that is what started the investigation....Though I have one in my lab I do not stick my stylus under an electron microscope never have.

Interesting information from Analog Planet on Stylus Cleaner Onzow Zero Dust.

Part Due. https://forum.audiogon.com/discussions/interesting-information-from-analog-planet-on-stylus-cleaner-onzow-zero-2

@daveyf Like we say here in CHi Town, Not only No but F NO.

Why would I post Part Due.

Your not Millercarbons son are you?

@daveyf I concur.

@vinylshadow @jpjones3318 posted this.

I use a method that was approved by Peter Lederman, or so I was told. Blue Tak, I put it on an old credit card and simply lower the stylus onto it. Then every few plays I use the MoFi LP9.My Onzow was too high to fit the cart onto. Hope this helps, respect.

@tomic601 I am sure this will all come out in the wash (yep I said it).

Engineering 101 Ishikawa or as we call herring bone diagram. At Cooper Industries it was a diagnostic Tree. Tomato....

@oldaudiophile thank you for your follow up.

Still have my reservations. And I am going to pull a stylus and take it to our lab in Ohio to see if we see any residue. 

This is a recommended cleaning practice from U Turn.