>From: William Marsh
>Reply-To: redcloud54@earthlink.net
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: Selenium Intensifier
>Date: Sat, 01 Jun 2002 01:45:46 -0400
>
>I also have used AA's method to intensify negs. After some testing,
>plotted curves revealed that it is not necessary to use as strong a
>solution as Ansel recommends. In fact, it is possible to obtain
>equivalent intensification using a solution as dilute as 1:10
>(selenium/hypo clear). The same boost in contrast (one grade,
>basically) was achieved, with greater economy. More dilution than this
>tended to lessen the effect.
>
>FWIW,
>
>Bill
>
I used Ilford Selenium toner (IT-3) to boost negatives and the more dilute solution (1:20 vs. 1:10?) resulted more added density.
Istvan