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IPOS consists of a multi-disciplinary, highly skilled team of chemists who are committed to delivering excellent customer service and have expertise in the following areas:

  • Mass Spectrometry (Single Q, QQQ and QTOF)
  • Chromatography (GC, HPLC, IC)
  • Spectral Analysis (NMR, XRD, UV, FTIR, ICP)
  • Physical Analysis (SEM, Rheology, Particle size, Surface Area)
  • Thermal Analysis (TGA, DSC)
  • Process Development + Physical Organic Chemistry


Dr Nicholas Powles is a founding member of IPOS. For the previous eleven years he worked for Zeneca in Agrochemicals Process Development and later for Avecia in the synthesis of pharma intermediates. During his time in Industry and at IPOS, Nick has worked closely with Professors John Atherton and Mike Page to utilise Physical Organic methodologies for Process Development, Technology Optimisation and Scale-up. Nick’s particular interests include physical organic techniques and phosphorous chemistry with relevance to oligonucleotide synthesis.



Along with Nicholas Powles, Matthew Stirling is also one of the founding members of IPOS. Prior to working at IPOS Matt worked at Zeneca, Avecia and NPIL Pharma in the process development and new technology development groups. Matt’s areas of interest/expertise include asymmetric transfer hydrogenation of ketones and imines and the dynamic kinetic resolution of amines and alcohols. Matt has published academic papers and co-authored patents in the area of asymmetric transfer hydrogenation and amine dynamic kinetic



Prof. Mike Page has been at the University of Huddersfield since 1973 and has over 30 years experience in the fields of physical organic chemistry and enzyme catalysis, he has published over 200 research papers and supervised over 40 PhD students. Mike has edited books on The Chemistry of Enzyme Action, Enzyme Mechanisms, The Chemistry of β-Lactam Antibiotics and co-authored a book with Andrew Williams on Organic and Bioorganic Mechanisms. Mike’s current research interests include kinetics and mechanisms in organic and bioorganic chemistry, enantioselective synthesis including enantioselective biotransformations and drug design, specifically enzyme inhibitors.



Dr Marcus Chadha has 12 years experience as an analytical chemist working under GLP /cGMP systems in the Pharmaceutical Industry. Throughout this time his roles were primarily analytical method development, technical support and formulation. During his PhD studies he discovered novel techniques using LC-MS to characterise carbohydrates, in particular exopolysaccharides. Marcus’s specialised areas include; LC-MS analysis, size-exclusion chromatography with multi-angle laser light scatter detection and analytical method validation for new drug substances / products as part of MHRA and FDA licence applications.



Helen Winsor has 24 years experience of working in an Analytical Development role in industry starting with ICI and more recently with Avecia, NPIL and Arch Chemicals. She provided analytical support to Process Development, Manufacturing and Quality Control groups. Helen is educated to degree level through part time study and has a vast range of analytical experience including HPLC/HPLC-MS/Rheology/ICP-MS/NMR/FTIR/Wet Chemistry but specialises in Gas Chromatography.



Howard has over 20 years experience in the areas of physical chemistry and materials chemistry research, developing processing routes and measuring the physical properties (thermodynamic, kinetic, structural and chemical) of materials and processes. He has 20 refereed publications.



Rebecca Armitage is educated to Masters degree level and now has over 15 years experience of working in industry as part of an Analytical Development team. She started her career with Zeneca / Avecia, more recently working for Piramal Healthcare and Rosemont Pharmaceuticals. Rebecca has a wide range of analytical experience including GC, HPLC and thermal analysis (TGA and DSC).



Prof John Atherton has over 30 years industrial experience in applying physical organic chemistry methodologies to chemical process development at ICI/Zeneca/ Avecia. Since his retirement from Avecia he has worked as a consultant for a number of companies, and has developed and presented extensive training materials over a number of years. He is co-author of the textbook ‘Process Development: Physicochemical Concepts,’ of several articles and book chapters dealing with Process Technology, and has authored or co-authored over 40 refereed publications and 24 patents.



Emeritus Professor Edward. L. Charsley, has over 40 years experience in the application of thermal methods to problems of industrial interest. He has authored over 120 publications and 2 patents and is a former President of the International Confederation for Thermal Analysis and Calorimetry (ICTAC). In 2007 he received the Mettler-Toledo Award of the North American Thermal Society and in 2008 became the first English scientist to be awarded Honorary Lifetime Membership of ICTAC.



Haifeng joined IPOS in 2009 to carry out an internal PhD project focusing on the adaptation of Agilent HPLC equipment to enable highly volatile solvents, such as ammonia, to be used in the development of high pressure, continuous organic reactions. Following his graduation in 2013 Haifeng has worked full-time for IPOS providing instrument engineer support and IT support, he is also an Agilent Approved Service Engineer and carries out the installation, repair and qualification of various Agilent instruments.