Hey guys. I'm sure you hear this a lot so stop me if you're tired of it. I recently began creating digital negatives and exposing them with cyanotype solution, with mixed results. Aside from getting badly contrasted images, which I'm sure will just come down to trial/error when it comes to printing my negatives out, I seem to be getting weird dark marks, like splatter marks, all over my pages a few seconds after applying the solution. If I had to guess, I'd say that the solution is 'bunching up' in the grain of the paper I am using. When I wash the images after exposure, these marks seem to go more brown, looking like dirty marks on the paper. Hydrogen peroxide solution makes this worse. I just did an Argyrotype, it is exposing as I type this, with some solution that I had left over and the same has happened. I will finish the exposure and process it anyway, but I don't have high hopes for it. Here's the technical stuff. With the cyanotypes, I used Windsor and Newton 300gsm Watercolour Paper, Cold Pressed. I hadn't heard much about this, so I'm fully expecting someone to tell me it's useless. With the Argyrotype, I used Canson Monteval Traditional 300gsm Watercolour Paper. I heard this is great for Cyano, but haven't heard much about Argyro. It was just here in front of me, so I thought why not. I have some Arches Aquarelle Cold Pressed, which I'm saving for use after I've made three or four consistently acceptable exposures with what I have, since the Arches cost me a bomb. I put two drops of Photo-Flo per cc of solution in all of the exposures. I should perhaps be more scientific in my tests, but these dirty marks need to go first before I can start worrying about max densities and humidity and things like that. I'm exposing with a UV bulb, by the way, which exposes the cyanotypes incredibly quickly. The argyrotype in the other room doesn't seem to be reacting to it as well. Any help that you guys could give me would be great. Cheers, Sam. Edit: By the way, I bought my solutions from fotospeed, and I use their Digital Contact Film for my negatives.