It seems that the UK has effectively banned potassium dichromate for private use (under it's implementation of the EU REACH directive). Does anyone know of any alternative restrainers other than potassium chlorate and NA2? I'd rather give up platinum printing than return to potassium chlorate, and NA2 only works with palladium.
Thanks in advance.
Hydrogen peroxide from the drug store. In the US that is a 3% solution. Dilute this 1+1 with water and i generally add 1 drop to the sensitizer for an 8x10 print. For small prints, dilute it more. The peroxide needs to be prepared immediately prior to each session because it loses the extra oxygen atom rather quickly. When you buy peroxide, check the expiration date to assure the freshness.
I have used this for several years rather than dichromate.
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