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Perry Johnson Laboratory Accreditation, Inc.

PJLA Technical Documents

  1. Determining Measurement Uncertainty for Dimensional Measurements

  2. Determining Measurement Uncertainty for Thermodynamic Metrology

  3. Determining Measurement Uncertainty for DC & Low Frequency Metrology

  4. Interpretation of Relative Uncertainty Equations

  5. Traceability Overview

ILAC Technical Documents

  1. Introducing the Concept of Uncertainty of Measurement in Testing in Association with the Application of the Standard ISO/IEC 17025

  2. Use of Proficiency Testing as a Tool for Accreditation in Testing

  3. Guidelines for the Determination of Calibration Intervals of Measuring Instruments

Calculators

To download the following calculators, click here:
  1. Relative Uncertainty Equation Calculator - Weight and Force

  2. Relative Uncertainty Equation Calculator - Dimensional

  3. Scale Best Measurement Capability Calculator

  4. Normalized Error Analysis of PT Results

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