In article ,
Mike Barnes writes:
Andrew Gabriel :
Perl (frosted) used to be around 2% lower, when the frosting was
etched with hydrofluoric acid. Due to H&S issues with hydrofluoric
acid, perl bulbs switched to a powder dusting a few years ago,
and I believe this is less efficient, but I don't have a figure.

What about those new-fangled PHP bulbs? :-)

Sorry, got perl on the brain at the moment.

--
Andrew Gabriel
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