Problems with Diafine

[john_robison3]

<p>I'd have to say the tank + agitation + film are the likely cause. I've used Diafine for years but usually only for Tri-X in contrasty light and in my 40 year old Nikkor SS tanks and reels. For most other B&W films I like HC-110 as a one shot because the concentrate keeps well.</p>

[tomscott]

<blockquote>

<p>You didn't contaminate solution A with any of solution B did you? ... Just a thought.</p>

</blockquote>

<p>No, I don't see how I could have, it would more likely be the other way around. When I mixed the chemical, I poured each gallon into seperate quart containers, when I use part A I dump it directly back into the quart bottle then pour in part B. I try to keep kind of an assembly line type thing going so as to not mix anything up.<br>

I am pretty sure that there is a consensus that I probably agitated too aggresively and, after a few people explained there agitation process, I am inclined to agree. Thanks for the thought though, you just never know.</p>

[profhlynnjones]

<p>AS Lex mentioned, don't agitate at all in solution B, it simply washes out the developer that has been soaked into the emulsion! Very gently lower it into the activator (soln. B).</p>

<p>It woauld be like using "water bath" development, it destroys the very technique you need.</p>

<p>Lynn</p>

[glen_h]

<p>As I remember it when I learned from my grandfather 40 years ago, the agitation is to keep bubbles off the film, or at least move them around. It takes very little to do that.</p>

<p>I have never had any problems with Diafine that I believed were due to development.</p>

<p>-- glen</p>

[notraces]

This is a really old thread - but did I the OP use a film dryer??? Those marks look like baked-in photo flo. (I had this issue,

too)