1. Copyright © 2004 J.M. Ingram & Associates Meeting Your Proficiency Testing Requirements on a Tight Budget James M. Ingram Jr. (315) 393-0229 consulting@jmingramassociates.com

2. Copyright © 2004 J.M. Ingram & Associates Commercial PT or Inter-Laboratory Comparison?

3. Copyright © 2004 J.M. Ingram & Associates A2LA Proficiency Testing Requirement If proficiency testing programs that are suitable and relevant to the scope of accreditation are available through commercial proficiency testing programs … or through well-organized inter-laboratory comparisons (ILCs) or internal/external round robin programs, the laboratories must participate in these programs.

4. Copyright © 2004 J.M. Ingram & Associates Program Requirements Acceptability of such programs will be made on a case-by-case basis by the assessor, and will be based on the design of the program, its frequency, the suit- ability of the samples, and defined written criteria for data analysis and corrective action.

5. Copyright © 2004 J.M. Ingram & Associates PT Program Acceptability Design of the program Frequency of PT activities Written criteria for data analysis Corrective actions

6. Copyright © 2004 J.M. Ingram & Associates Program Design Calibrator vs. DMM Number of Technicians Before and after measurements?

7. Copyright © 2004 J.M. Ingram & Associates Frequency of the PT Activity Calibration Labs – Two per year 100% of scope in four years Plan and schedule are required

8. Copyright © 2004 J.M. Ingram & Associates Data Analysis Average of multiple readings? Measurement Uncertainty budgets Normalized Error – En Spreadsheet – validated! Added value calculations?

9. Copyright © 2004 J.M. Ingram & Associates Sample Spreadsheet DC VoltageEn Results Prior to V CalPost V Cal Nominal Range Nominal ValueTech A Tech BRef Lab Tech A Tech BRef LabIn-House Tech A Tech B Tech A Tech B 220 mV0.00 mV 0.00000 mV 0.00010 mV 0.000100 mV 0.000854 mV0.116 100.00 mV 100.00000 mV 100.00037 mV 0.000400 mV 0.001281 mV0.276#### ##### ### -100.00 mV ######### ### 0.000400 mV 0.001281 mV0.142#### ##### ### Measurement of a Fluke 5700A calibrator with an HP 3458A DMM

10. Copyright © 2004 J.M. Ingram & Associates Documented Results Outline of the PT activity Measurement Uncertainty budgets Data & results of analysis Conclusions and analysis Corrective actions

11. Copyright © 2004 J.M. Ingram & Associates Conclusion Added work (one time?) Money and time saved Convenience More technicians involved

12. Copyright © 2004 J.M. Ingram & Associates For further information contact: James M. Ingram Jr. Principal Consultant J.M. Ingram & Associates Management and Metrology Consultants 505 Wadhams Street Ogdensburg, New York 13669 (315) 393-0229 consulting@jmingramassociates.com www.jmingramassociates.com