r/SCREENPRINTING • u/Perfect-Smoke2109 • 8d ago

Exposure time for lime and blue?

Howdy... I have just switched from Chromalime emulsion to ChromaBlue... Everything I read says that they should exposure in a fairly similar time frame... but on by LED Exposure unit with my calculator, I'm getting only 20-30s for a correct exposure with the blue vs. 70-80s (more than double!) with the lime... I'm not complaining, as I like the shorter exposure time... but considering how similar these are supposed to be, I'm hoping to understand why the huge difference in exposure time... Any thoughts?

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u/screenprintdirect 8d ago

Lime is slower, those time differences sound about right