The New Tri-X and PMK

[Richard K.]

OK I've just tray developed a few sheets of the new Tri-X in PMK for my usual 13 min at 70 deg. The negs seem OK but have nowhere near the amount of proportional yellow-green stain that the old Tri-X had. Is that true now? Or has my PMK gone weak (I've had it in a stoppered bottle for around a year). Thanks!

[chinapaul]

I have not used, because it's very toxic. My friend used PMK, he think it's very ordinary .

[Andrew O'Neill]

There's a new Tri-X ??

[Doremus Scudder]

Richard,

To answer your question: I have experienced the same thing. I believe that the new Tri-X has a thinner emulsion layer and, therefore, does not show the amount of general stain that the older version did. I have been using my old Tri-X development times with very small adjustments. (FWIW, I tray develop 4x5: 9 minutes is my N.)

However, I find the negatives to have about the same quality regarding grain masking, etc. as the old Tri-X in PMK.

Your PMK is probably alright if the solution A has not gone dark. It can be straw colored (or a shade darker) and still be perfectly fine.

Best,

Doremus Scudder

[D. Bryant]

There's a new Tri-X ??

Yeah, it's been out quite a while. As for the change in the PMK stain that the OP mentioned, less is more.

Don Bryant