May 1993 Analytical Proceedings ANPRDI 30(5) 213-240 (1993) Proceedings of the Analytical Division of The Royal Society of Chemistry CONTENTS 213 Annual General Meeting of the Analytical Division 213 ;Report of Meeting 213 Errata 214 VAM Viewpoint 'Va I i dat i o n of Sa m pl i ng St r ateg i es' 215 Obituary 216 Analytical Viewpoint 'New Time-invariant Definition of Analytical Chemistry Aimed at Improving the Scope of Analytical Abstracts' by Tibor Braun 218 Robert Boyle Valedictory Lecture 'New Understandings Gained from Chemical and Electrochemical Investigation of Redox Reactions of Electron Transfer Metalloproteins and Enzymes: Relevance to Voltammetric (Amperometric) Biosensors' by A. M. Bond 'Light Microscopy: What Determines Image Quality?' by P.J. Evennett 'Microscopy of Dispersions' by J. McMahon 'Measurement of Foam Bubble Sizes' by E. G. Mahers and S. C. Joyce 'Measurement of Fractal Dimension' by Matt G. Reed 'New British Standard for the Determination of Particle Size Distribution Using 227 SUMMARIES OF PAPERS 227 Particle Characterisation by Microscopy and Image Analysis 227 227 228 228 228 Microscope and Image Analysis Methods' by Anthony P. Rood 229 'Towards National Measurement Accreditation Service Accreditation' by K. G. Brocklehurst 229 'Image Analysis. Its Application to the Characterization of Particle Shape' by K. Julian and S. L. Mills 233 AMC Meeting 233 'Analysis of Sulfadimidine in Medicated Animal Feeds' by Ian M. Barwick, Peter Warwick and Neil T.Crosby 235 Equipment News 238 Conferences and Meetings 238 Courses 239 Analytical Division Diary ... 111 ANALYTICAL PROCEEDINGS. MAY 1993. VOL 30 with no risk, no ~ressure, STN Mentor laboratory, a series of instructional software for IBM personal computers, is the best way to learn how to search scientific databases : You will learn in your own office, atyourown . You will be a re le to correct any errors, easily. You will NOT incur charges for online use (though the simulation is so realistic, you‘ll think you’re searching STN I nternationalm). You will choose from several sample databases, derived from CA5, INSPEC, and PHYSICS BRIEFS. Try the interactive approach to retrieva learnin 9 . online information Enquiries from Eire or UK, please telephone The Royal Society of Chemistry at 0223 420066 or telefax 0223 423623. Learn to search scientific databases no bnline charges! STN Mentor Laboratory i s produced by FIZ Karlsruhe for STN International in association with CAS ‘, a division of the American Chemical Society’.