Standards for Environmental Testing and Research Wellington Laboratories Inc. Offers a variety of native and mass-labelled reference standards for legacy environmental contaminants such as polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs). We also provide ready-to-use calibration sets that have been designed to meet regulatory requirements for the analysis of PCDDs/PCDFs and PCBs in many countries. Language School.

Our inventory of emerging environmental contaminants such as Brominated Flame Retardants (BFRs) and Perfluorinated Compounds (PFCs) also continues to expand. Wellington currently offers a number of individual native and mass-labelled reference standards as well as many solution/mixtures to support research in these areas.

Underground classics in. Third edition. (1977) Basic Principles of Organic Chemistry, second edition. Benjamin, Inc., Menlo.