If I use a consistent ratio of Pt/Pd for coating, is it possible to premix the Pt and Pd together so coating only requires measuring out equal amounts of FeOx and premixed Pt/Pd? Just wondering if the metals would stay in solution and remain stable over time, it would be an expensive experiment if it failed...
I generally mix enough emulsion for a printing session as mentioned by Kerik. I suspect the pt/pd less the FeOx would be okay. To be sure contact Bostick & Sullivan. They are helpful with questions especially since selling the chemistry is part of their business.
I have a small bottle of pd/pt mixed 4:1 that's been on the shelf for at least 3 or 4 years. I just emptied it into another container and there is zero precipitate.