1. Department of Chemistry and BiochemistryThe Ohio State University 151 W. Woodruff Ave Columbus OH 43210 USA
2. Measurement Science and StandardsNational Research Council of Canada 1411 Oxford St. Halifax Nova Scotia B3H 3Z1 Canada
3. Marine Institute, RinvilleOranmore, Co. Galway Ireland
4. Department of ChemistryUniversity of Oslo 0315 Oslo Norway
5. Norwegian Veterinary Institute P.O. Box 750 Sentrum 0106 Oslo Norway
6. Chemistry DepartmentUniversity of Waikato Private Bag 3105 3240 Hamilton New Zealand