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Mass Metrology


The Mass Metrology Seminar is a two-week, "hands-on" seminar. It incorporates approximately 30 percent lectures and 70 percent demonstrations and laboratory work in which the trainee performs measurements by applying procedures and equations discussed in the classroom. The seminar focuses on the comprehension and application of the procedures, the equations, and calculations involved. The seminar includes the operation of the laboratory equipment, review of publications, standards, specifications, and tolerances relevant to the measurements. Training covers mass calibration procedures published in NISTIR 6969 and are suitable for the calibration of mass standards to OIML R111 Class E2 through M3 tolerances, ASTM classes 1 through 7 and NIST HB 105-1 Class F. Training is provided to enable the participant to correctly identify and implement the correct calibration process for each weight classification. The entire seminar incorporates statistical analysis, process measurement control methods, uncertainty analyses and generation of ISO/IEC 17025 compliant calibration certificates for all measurements made during the seminar.

Learning Objectives

At the end of this seminar, using Standard Operating Procedures 2, 4, 5, 7, 8, 9, 29, and 30 and Good Measurement Practices 10, 11, 13, and 14, participants will be able to:

  • Identify mass artifacts and use appropriate procedures to ensure good quality, accurate, traceable mass measurement results
  • Use your slides and reference materials to explain highlights and key concepts of each topic to each other and to your managers
  • Demonstrate how these topics fit into an ISO/IEC 17025 management system
  • You will be able to implement the mass calibration procedures, validate and use the job aids, and use reference materials to perform laboratory functions and improve operations

Technology Requirement(s):

Participants must provide a laptop or notebook computer for the Mass Metrology Seminar and be well trained in the development and use of spreadsheets for complex repetitive calculations. Participants must have administrative rights for the computer so that that files can be transferred to and from it as required by the seminar exercises through the use of USB memory sticks or CD-ROMs. Availability of a scientific calculator (minimum 12 digits) and familiarity with its operation is also required.

Materials & Supplies:

Participants are encouraged to bring template versions of the mass calibration certificates issued by their laboratory as a starting point for the calibration certificates to be submitted during the seminar. Feedback and suggested changes to ensure ISO/IEC 17025 compliance will be provided during the seminar. Generation of calibration certificates will be required, so come prepared. A number of notebooks and course materials will be provided, so please ensure you have extra luggage space to carry these items. A copy of NIST Special Publication 1001, Basic Mass CD-ROM, will be mailed out to registrants can be downloaded in two parts (.zip format) from http://www.nist.gov/pml/wmd/labmetrology/training.cfm . Be certain to download both parts into a single directory on your computer. If desired, request a CD-ROM containing NIST Special Publication 101 from OWM@nist.gov. Participants are strongly recommended to complete the material on the CD. Completing the CD should take 16 to 40 hours.


Successful completion of the Fundamentals of Metrology Seminar is a prerequisite for the Mass Metrology Seminar. The Mass Metrology Seminar is built on the concepts learned during the Fundamentals of Metrology Seminar, applying units, measurement uncertainty, measurement assurance, traceability and Quality Management System concepts to the mass calibration procedures.

Minimum Requirement(s):

To receive a Training Certificate for this course, successful completion requires participants to actively participate in the entire course (e.g., take notes, engage in discussions, ask questions), complete all classroom, homework, and application exercise assignments, and submit a series of calibration certificates as evidence of completion of all application exercises conducted during the hands-on portion of class exercises (guidance is provided in the course).


This training seminar is open to industry and government metrologists.

Related Project(s):

NIST OWM has a number of other training opportunities scheduled. For more information:

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