Pyrocat HD color

[Thomas Bertilsson]

I have been wondering for a while if the color the working solution of Pyrocat HD makes a difference.
I bought a kit from Photo Formulary, and when I mix the chemistry, distilled or tap water, (I use 1+1+100), the color is first green and slowly turns a very slight gold / pink tone. The green color seems to be getting a bit more intense with time. Is that a sign that the stock solution is coming to the end of its life?

It still works great. I have developed TMX, APX100 (Oh how I will miss you), Tri-X, and FP4+ - they all come out fantastic with a very slight brown stain. So I'm not worried, I'm just curious.

- Thom

 

[sanking]

I have been wondering for a while if the color the working solution of Pyrocat HD makes a difference.
I bought a kit from Photo Formulary, and when I mix the chemistry, distilled or tap water, (I use 1+1+100), the color is first green and slowly turns a very slight gold / pink tone. The green color seems to be getting a bit more intense with time. Is that a sign that the stock solution is coming to the end of its life?

It still works great. I have developed TMX, APX100 (Oh how I will miss you), Tri-X, and FP4+ - they all come out fantastic with a very slight brown stain. So I'm not worried, I'm just curious.

- Thom

Thom,

You got me. I have never seen a green color that turns to slight gold/pink. My working solutions always start out just a tad yellow and then turn to light amber. The difference could be do to slight changes in pH to the water used to make the working solution. That is about the best I can do to explain it.

Sandy King

 

[Amund]

My last 30-40 ml of HD turned green, then amber. Was still active.

 

[Thomas Bertilsson]

Ha!

Amund, I think I know what it is. It's because we're Scandinavians! I am Swedish, and it's nice to know I have something in common with other Scandinavians...

Sandy, thanks for your reply. I wasn't really looking for an explanation, I'm just curious. Not too worried about it either, since the developer works great!

- Thom