An Environmental Microbiologist View of Uncertainty of Measurement

Michael Brodsky

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The Webinar will discuss the concept and application of uncertainty of measurement (MU) as required by ISO/IEC Standard 17025:2005 for laboratory accreditation, from a practical microbiological perspective, using unambiguous language with useful examples. Many laboratories are confused about what MU is and what is needed to meet the requirement, including, what data to collect and how to analyze it. A practical step by step approach specifically applicable to microbiology will be discussed

Course Objective

  • Learn how to calculate basic quantitative statistics
  • Calculating repeatability and reproducibility
  • Calculating precision
  • The concept of combined uncertainty
  • Expanded uncertainty
  • Uncertainty in qualitative analyses
  • Practical ways for using Uncertainty

Course Outline

  • Basic Statistical concepts in microbial distribution
  • Variance
  • Standard Deviation
  • Repeatability
  • Reproducibility
  • Precision
  • Factors affecting uncertainty
  • Combined uncertainty
  • Expanded uncertainty
  • Measuring precision of a method for calculating MU.
  • Making practical use of MU data
  • Applying MU concepts to qualitative methods

Target Audience

  • Microbiological Bench analysts
  • QA managers
  • Laboratory managers/supervisors
  • QC practitioners
  • Food companies who rely on microbiological criteria for estimating risk

Webinar Events
Live -Coming soon!

Training CD-DVD

Physical CD-DVD of recorded session will be despatched after 72 hrs on completion of payment

Recorded video

Recorded video session

Speaker: Michael Brodsky,

Michael has a post-graduate degree from the University of Toronto, School of Hygiene and Tropical Medicine. eHe has been an Environmental Microbiologist for more than 46 years, as a research scientist and Laboratory Director in both the public and private sectors. He currently operates as the President of Brodsky Consultants. He is a Past President of the International Association for Food Protection (IAFP), the Ontario Food Protection Association (OFPA) and AOAC International. He serves as Chair for the AOAC Expert Review Committee for Microbiology, as a scientific reviewer in Microbiology for the AOAC OMA and the AOAC Research Institute, as a reviewer for Standard Methods for the Examination of Water and Wastewater and as a chapter editor on QA for the Compendium of Methods in Microbiology. He is also a technical assessor in microbiology for the Standard Council of Canada and Certified by Exemplar Global as a lead auditor/assessor for the Canadian Association for Laboratory Accreditation (CALA).

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