NEW ORLEANS - The opinions of a plaintiff's expert regarding concentrations of benzene in paints to which the plaintiff was exposed, as well as the duration of exposure, are speculative and unreliable pursuant to Daubert v. Merrell Dow Pharmaceuticals, Inc. (509 U.S. 579, 590 ), a Louisiana federal judge said in a Nov. 30 decision excluding the expert (Craig Moore, et al. BASF Corporation, et al., No. 11-1001 E.D. La.; 2012 U.S. Dist. LEXIS 170411).