Metol/Phenidone/Catechol Pyro

mrred · Oct 18, 2016

mrred submitted a new resource:

(there was a url link here which no longer exists) - High activity pyro

Here is two versions maximizing (developer activity and stain) of a water based catechol pyro developer. Catechol, in my opinion, is the sharpest solvent available for any developer and gives consistent results with rotary and standard processing.

A water base is preferred to minimize pollution by using freshly cleaned (wet) syringes.

Part A

MCAT: (Metol/Catechol)

70 ml dist water
2g sodium sulfite
6g catechol
1g metol
top to 100 ml dist water

PCAT: (Phenidone/Catechol)

70 ml dist...

(there was a url link here which no longer exists)

mrred · Oct 18, 2016

Nikon F100, Sigma 105 OS MACRO,Orwo N74+, MCAT 1:1:150

StephenT · Oct 20, 2016

Oh No! If MCAT did that to that girl, I'm staying away from both!

mrred · Oct 20, 2016

No animals were harmed from the shooting of zombies.......

mrred · Nov 3, 2016

I made a batch specifically for divided, using more sulfite to aid longevity.

70 ml dist water
4g sodium sulfite
6g catechol
1g metol
top to 1 l dist water

Like Diafine, I just top it up as the level get's lower.

Metol/Phenidone/Catechol Pyro

mrred

mrred

StephenT

mrred

mrred

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