Ultrasonic cleaning and logos on crystals

[wzy-hman]

Would anyone be able to confirm if its OK to put a watch case including crystal with logo (eg a Pulsar, say) into an ultrasonic cleaner? I am wondering if its safe or if the ultrasonic cleaning will also remove the logo on the crystal?

[Kasper]

never happened to me before...but you never know...depends on the products you use.

[wzy-hman]

So using standard/normal products has worked without damaging the logo for you right? Thanks for any advice