Microscopic and Chemical Methods of Identification of Botanicals and Contaminants in Dietary Supplements
International Food Safety Training Laboratory
Upcoming Classes

There are currently no upcoming sections for this course.

For more information, you can call us at 301-405-1342, or email us at
Course Description

Level: Intermediate
Duration: 4 days

The IFSTL is hosting a course on microscopic and chemical identification of botanicals used in dietary supplements.

Instructors: Dr. George Ziobro, U.S. FDA, Stanley Cichowicz (FDA-retired) Dr. Janie Dubois, University of Maryland

Topics Covered:

  • Regulation in the U.S. concerning dietary supplements
  • Quality Assurance, including GMP
  • Supply chain management: How do you verify?
  • Receipt of raw material, testing
  • Sampling: Is it representative?
  • What is the question you are asking?
  • Identity
  • QA specs: Is it what you ordered?
  • Potency
  • Qualifications for rejection: How do you detect if it is adulterated (diagnostic characters and objective criteria)
  • Basis for criteria: What standards are available/do you have for criteria, how do you maintain the standards?
  • Good laboratory practices, introduction to ISO 17025
  • Techniques used in lab work:

  • Microscopy at low and high magnification
  • Polarized microscopy
  • Digital imaging under the microscope
  • Thin Layer Chromatography (TLC)
  • Introduction to liquid and gas chromatography with various detectors