10.1371/journal.pone.0035899.g004 Christopher B. Zachary Christopher B. Zachary Morgan Gustavsson Morgan Gustavsson Sulphorhodamine 640, 0.75 g/L. Peak at 658 nm. Public Library of Science 2013 658 2013-02-20 05:49:32 Figure https://plos.figshare.com/articles/figure/_Sulphorhodamine_640_0_75_g_L_Peak_at_658_nm_/316278 <p>Sulphorhodamine 640, 0.75 g/L. Peak at 658 nm.</p>