mick wrote:
On Fri, 11 Jan 2008 10:12:34 +0000, Andrew Gabriel wrote:

snip

IIRC, the EU max permitted mercury in a CFL is 5mg, but that would
have been written some time ago, and advances have allowed less to
be used since then.


Good point. Another is that manufacturers have no interest at all in
using high quantities of mercury as it isn't a cheap metal to extract
or manage. I'm pretty certain that they are attempting to keep the
amount as low as possible.

Thats a good point too. Market forces - nobody is going to put more than
they absolutely have to into a bulb because of cost.

A while ago the tree huggers were all wittering on about excessive
fertiliser use. Like the hole in the ozone layer they seem to have
forgotton that now because they have global warming to witter on about.

No farmer would use more fertiliser than he had too because of the cost.
They are very sharp people IME.


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Dave - The Medway Handyman
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