Ilford IIN-3 Chromium Intensifier

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There's no H2SO4 used in this intensifier.

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Oops! I just made a substitution of my own! No wonder I have such problems in the lab.
Let's try this again.... Any suitable substitutes for HCl?

i've try it, it seem dont like selenium which intensifier negative and raise contrast,
Ilford IIN-3 Chromium Intensifier very good for underdeveloped negative and intensifier it in all range density so contrast just litlle rise, hardening is a must otherwise it's easily scracth
thanks Ian, very usefull