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> Enhancing contrast - help and advice appreciated |
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Quote:
"WORKING SOLUTION LIFE BROMOPHEN stock solution should last for up to:- 6 months in full capped containers 3 month in a half full tightly capped container. Working strength MULTIGRADE developer, PQ UNIVERSAL and BROMOPHEN left in an open dish should not be kept for more than one working day. If stored in a tightly capped bottle they may last up to 24 hours." |
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colour enlarger, contrast, problems |
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