Re: Bulb for Osram Duka-50 safelight?

RE:Bob Salomon wrote:
>
> No filters have to be purchased as all come with the Kaiser and
> the tube Kaiser uses does not effect color paper.
>

I'd suppose it does not affect color IF one of the
supplied filters is installed.
I think perhaps sodium vapor lamps came into wider use
with the increasing popularity of VC papers. Many old hands
accustomed to the high light levels of a Graded paper
darkroom could, with the sodium, maintain some
semblance of their previous well
lite darkrooms. Dan

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