"jim" wrote in message
ps.com...
Being tempted to stockpile a decent quantity of GLS light bulbs (the
ones about to be banned) the thought crosses my mind - do they
deteriorate in storage?

I'm talking about a prolonged time period up to 20 - 30 years (which
should see us out of chez nous into another world). I envisage
storing them in the attic and avoiding movement until needed.


Well I have several boxes of specialised light bulbs (odd voltages)
that I use on machine tools in my workshop, and most are at least 20
years old, and some older. I cannot remember ever pulling one out that
didn't work. These are mainly 24 & 48v bulbs in the same format as
normal mains ones (ie standard bayonet). It may be that the stouter
filament of a lower voltage aids longevity, but I would think that
would only be the case if stored where vibration were a problem.

AWEM