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Rama Tummala, GSK (Chair)

Pharmacist by education, Rama Tummala has nearly 30 years of pharmaceutical industry experience in Operations, QA, Validations, Technology Transfer, MS&T, Quality and Compliance audits and Greenfield / Brownfield project management.



Rama is currently working with GSK as a Principal Quality Audit Manager operating from Singapore. Rama is conferred with 'GSK Fellow' and is part of GSK Fellowship of Scientific and Technical Excellence. He has previously worked in India with CIPLA LTD., The Himalaya Drug Company and Alcon Labs; in the USA and Singapore with Alcon Labs. He is also currently serving as a PDA Singapore Chapter core board member as Treasurer.

Emily Cheah, Charles River Laboratories

A pharmacist by training, Emily is currently the Managing Director of Charles River Laboratories Singapore (Microbial Solutions). Emily oversees strategic technical operations including laboratory operations, QA, R&D / Centre of Excellence, and market development operations. She is involved in the evaluation and implementation of new technology & services with the Microbial Solutions division. She also serves on

various committees within the company.


She received her Ph.D. (Pharm. Technology) from the National University of Singapore and her EMBA from INSEAD.


Emily is one of the founding members of the PDA Singapore Chapter and has served as a Board Member in various capacities since its inception in 2013.


Emily is the current President of PDA Singapore Chapter.

Andiyanto Sutandar, NNIT

Andiyanto is a Manager in NNIT Singapore. Andi leads NNIT Singapore's Manufacturing Science and Technology service unit. He has broad and in-depth experience in technology transfer, NPI, risk management, deviation and NC management, supply chain management, manufacturing workflow optimization and project management in the pharmaceutical industry. Additionally, Andi has expertise in infection control risk management and design & management of high containment facilities for infectious diseases research.


Andi has been a volunteer with PDA Singapore Chapter since 2015 and has previously served as Secretary of PDA Singapore Chapter board. He holds a PhD in Mechanical & Production Engineering from Nanyang Technological University.


Andi is the current President-Elect of PDA Singapore Chapter.

Ziva Abraham, Microrite (United States)

Ziva Abraham is the President and Founder of Microrite, Inc., a California based consulting firm providing consulting and training services to pharmaceuticals, biotechnology, medical devices and in vitro diagnostics in the areas of quality assurance, quality control, microbiology, and validation.


She has over 35 years of academic, research, clinical and industrial experience in microbiology, and quality assurance. Ziva has received her Master's Degree in microbiology with a focus on Mycology and has conducted research on developing microbial Insecticides using entomogenous bacteria and fungi. Her career also includes founding and managing clinical laboratories for Maccabi Medical in Israel. She has trained personnel from various industries in microbiology techniques and methods. She uses her extensive experience to teach why assessing risk of microbial contamination should be in the forefront of any company that has products for human/veterinary use. Her experience in clinical laboratories has provided her with the framework to understand the effects of microbial contamination in products from a patient safety perspective.

Richard Chai, STERIS Corporation

Richard Chai is a Technical Service Manager in the Life Sciences Division of STERIS Corporation. He currently provides global technical support related to process equipment cleaning and contamination control in cleanrooms. Richard has more than 20 years of industry experience in manufacturing, validation and technical support. He has published several articles in contamination control, and has visited manufacturing facilities in the US, Europe and across Asia providing technical support and training.


Richard holds a bachelor's degree in Mechanical and Production

Engineering from Nanyang Technological University, Singapore. He has been an active PDA Singapore Chapter volunteer since 2017.

Li Wei Chan, MSD International GmbH

Li Wei joined MSD International GmbH (Singapore) Biotech Sterile Fill- Finish site as the Microbiology Manager since Nov 2020. In this role, Li Wei is responsible for managing the EM program for aseptic cleanrooms & critical utilities, contamination control strategy for sterile final drug products and qualifications for new product introduction. He also ensures compliance to corporate and regulatory standards and supported regulatory inspections e.g. FDA PAI for Keytruda. In his previous roles, Li Wei was responsible for developing microbial control strategies, developing microbiological test methods, managing laboratory compliance and managed internal quality audits.


Li Wei received his Bachelor of Science (Biotechnology) from Monash University, certified Quality Auditor and had 16 years of experience in the pharmaceutical and medical devices industry (sterile & non-sterile manufacturing facilities).