GordonH

Thanks for confirming that.
I was sure that it would be harmless as its used for jewellery.
I don't have a cleaner big enough for a whole trumpet but I can out the valve caps and slides from my piccolo trumpet in it, possibly even the valves themselves.
I am sure it will bring out a lot of dirt.
I know when I put my watch in it clouds of dirt came out of it.

__________________
"O trumpeter, methinks I am myself the instrument thou playest,
Thou melt'st my heart, my brain--thou movest, drawest, changest
them at will;" (Walt Whitman)