I had a little bit of time between jobs yesterday and decided to use the time to try again with the peroxide. I didn’t have time to hand up the UV light, so I literally held it over the paper whilst simultaneously making my lunch..I knew this would be the absolute minimum time for exposing the images (I used some nearby paintbrushes, hoping the light would make its way through the bristles), but was keen to do a quick test with the peroxide rather than the white vinegar.

I rinsed the images one handed, while washing down my sandwich with some OJ in the other hand.

Results – No significant change to the depth of the blue which I had hoped for as the peroxide should speed up the oxidisation process, but what I did find was a recurring theme, that none of the cyanotypes have proved successful on my recycled coco pops box..

Conclusion – I’m probably going to stick to heavy watercolour paper, at least for the chemical experiments, and extend the exposing and rinsing time.

PS. I quite like the paintbrush that appeared on the paper sample.