Someone asked me today how to do a Beer's law plot. I have a semple plot for you on the class webpage in the LAB section. http://theochem.mercer.edu/chm112 -- Andrew J. Pounds, Ph.D. (pounds_aj at mercer.edu) Professor of Chemistry and Computer Science Mercer University, Macon, GA 31207 (478) 301-5627 http://faculty.mercer.edu/pounds_aj