Archived posting to the Leica Users Group, 1998/07/20

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Subject: Re: [Leica] Help! Fogged film
From: "Dan Post" <dwpost@email.msn.com>
Date: Mon, 20 Jul 1998 13:32:49 -0400
 
Eric, et al.
The red color in the film, and you find it even in Tri-X when developed in a
'coupling' developer like Rodinal is the remains of a leuco blue dye the
absorbs the red and yellow end of the spectrum making the film panchromatic.
You can totally eliminate it by soaking the film in a 'clearing' solution of
5% sodium sulfite for a few minutes. The Sodium Sulfite actually makes the
wash time less!
:)
Dan