1. Intertek-MSG, The Wilton Centre, Wilton, Redcar, TS10 4RF, UK (N.E., I.P.); Clairet Scientific Ltd, 17/18 Scirocco Close, Moulton Park Industrial Estate, Northampton, N3 6AP, UK (P.D., J.A.); Kaiser Optical Systems, 371 Parkland Plaza, Ann Arbor, Michigan 48103 (I.L., K.D., H.O.); School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK (M.W.G.)