Research Scientist with expertise in phytochemicals is needed for a NIH funded study of dietary supplements. This project supports the Dietary Supplement Ingredient Database (DSID; (https://dsid.od.nih.gov/), a database for information on analytically verified dietary supplement content. The DSID website provides online calculators converting labeled levels into analytically derived estimates of ingredients in dietary supplement products sold in the US. Funded by the National Institutes of Health (NIH) for over 15 years, the DSID project has a team that includes a chemist, biologists, IT analysts and statisticians. The research is based on fundamental principles of public health, nutrition and analytical chemistry. For multivitamin/mineral and omega-3 fatty acid studies, dietary supplement samples are purchased according to statistically developed sampling plans for products representative of the US market.