Disklavier

> If you are getting deposits of dust, you might wish to check your
> humidity.  Ideally, your piano should be kept at 42% relative humidity.

Hi there,

I'm in the UK - is the 42% relative humidity the same around the world, or
different for the various markets (because of the way the wood is
treated)?

Should I be doing anything to my upright disklavier to preserve humidity?

Thanks,

James