how do i figure out a 1:10 dilution for a 16oz container??

[lex_jenkins]

<p>The manufacturers almost always make explicitly clear what they mean by either dilution designation, whether 1:2 or 1+2. Kodak and Ilford certainly do, so there is no mystery. So does Agfa with Rodinal.</p>

<p>And, yes, over the decades I have seen contradictory usages of the ":" ratio among various manufacturers. Which is why it's sensible to consult the manufacturer's own technical literature for clarification. For one developer from one manufacturer, 1:2 may indeed mean 1+2. For another, 1:50 may mean 1+49. Read the directions.</p>

<p>The only developer I've used in the past 10 years that required some head-scratching to decipher was Tetenal Neofin Blue, presumably because something was lost in translation of the instructions. At the time I first used it I received clarification from the U.S. importer (who, unfortunately, has gone out of business).</p>