where to buy 18w bulb??

[DiveCaptDean]

Are you sure of the part number???
I did a quick Welch Allyn Search, and found two places that look promising. All that i found were WA****** type part numbers and Welch Allyn builds mostly medical equipment. I looked thru a catalog for some of their equipment, but this bulb number did not come up. It did not come up on any searches on those sites either. there was a contact number on these sites..maybe this will help...GL
Deano