When Good Pyrocat goes Bad

[esearing]

Haven't used Pyrocat yet, but I fill to 450ml. I find if I go much more, it will leak out of the caps.

off topic -- but here are my tips for the sp445 tank; lightly coat the o-ring with silicone or vaseline., squeeze sides to create a slight vacuum when tightening the caps. don't over tighten.

[Corran]

So according to Bud at PF my batch #188 was mixed in 2013 (Purchased December 2017). They have newer batches mixed since then, but due to low demand it hangs around.

Wow, that's pretty bad. So really, the issue is that you were using 5-year-old Pyrocat. I hope they pulled back the amount they mix so that they have fresher stock.

[Doremus Scudder]

Try soaking the negatives in a weak sodium carbonate solution and see if that removes the pink. I have had a similar problem with TMY retaining a lot (a lot more than your negs) of the pink/magenta sensitizing dyes at the end of normal processing. I need an after-bath in the sodium carbonate to eliminate the pink. My problem negs actually start out with a dark blue "veil" which turns to pink/magenta and then clears in the carbonate bath.

Best,

Doremus

[esearing]

New batch of Pyrocat HD non-glycol from B&S and all is right with the world. Nice tan negatives and no more pink. I did have a scare though, the first sheet I developed was blank. Must have forgot to pull the slide.
I may need to retest for time again but my Normal and N- are close for scenes with broad contrast range, but perhaps a tad over. I can see white clouds on blue sky with contrast and plenty of shadow detail.

Note: The Bostick & Sullivan mix comes dry in 500ml bottle for part A, but mixed for Part B in 500ML bottle.

[Andrew Tymon]

Are you going to decant part A into smaller bottles?