Pyrocat-HD, Various Dilutions & Continuous Agitation

**Andrew O'Neill** · 22-Apr-2023, 06:21

jp · 22-Apr-2023, 10:00

Enjoyed that video. I use pyrocat hdc quite a bit (equivalent to pyrocat hd) and don't play around with all the possible variations. Glad to see confirmed the typical 1:1:100 does so well!

**Andrew O'Neill** · 22-Apr-2023, 16:02

Originally Posted by jp

Enjoyed that video. I use pyrocat hdc quite a bit (equivalent to pyrocat hd) and don't play around with all the possible variations. Glad to see confirmed the typical 1:1:100 does so well!

Thank you, jp. I've been meaning to give Pyrocat-HDC a whirl for a while now... if I recall, for semi-stand, you add a few mils of a 0.1% solution of Ascorbic Acid to the working solution?

jp · 22-Apr-2023, 16:44

HDC is a different recipe with fewer ingredients for part-A.
Sandy King personally says it works the same.
I like stocking fewer ingredients.

https://www.pyrocathd.5x4.co.uk/mixing-pyrocat-hd/

**Andrew O'Neill** · 22-Apr-2023, 17:19

Originally Posted by jp

HDC is a different recipe with fewer ingredients for part-A.
Sandy King personally says it works the same.
I like stocking fewer ingredients.

https://www.pyrocathd.5x4.co.uk/mixing-pyrocat-hd/

Thanks! I think I was thinking of the one that is intended for semi-stand...