Dr. Jinchuan Yang is a principal scientist at Waters Corporation, and a subject matter expert in food and environmental applications, polymer chromatography, and LC and MS technologies. Since he joined Waters in 2002, his roles at Waters have mainly focused on application development, market development, and support for R&D and training. He is an active participant in technical stakeholder groups at AOAC International and USP, serving as an expert panel member in AOAC SPIFAN and participating in review, recommendation and muti-lab testing of AOAC methods.