Hallo, I use Ilford Selenium toner on warmtone fibre based gloss paper, normally at a dilution of 1:4 or 1:5 and the colour change is normally towards the red end of the spectrum. The latest lot I did went off towards blue without going near a red shift at all! Was using a premixed solution from a concentrate that had done the red shift before. *confused* I have not noticed this before, any thoughts? Chemistry dead, corrupted or other? Hoping for some enlightenment! Sim.