GIP 10 - Impartiality and consistent operation of laboratories

Introduction to ISO/IEC 17025

  • Impartiality and Consistency: Standards for testing and calibration laboratories.

  • Objectives: Maintain integrity and reliability in laboratory practices.

Learning Objectives

  • State Purpose: Understand the types of sampling, testing, and calibrations.

  • Explain Requirements: Based on ISO 17025:2017 for impartiality and consistent laboratory operations.

Types of Tests and Their Purpose

1. Sampling

  • Aim: To select a representative portion for testing.

  • Importance: Ensure accurate reflection of characteristics.

2. Testing

  • Aim: Determine properties or characteristics via specified methods.

  • Types: Analytical, physical, chemical, or mechanical tests.

3. Calibration

  • Aim: Ensure accuracy and reliability of measurement instruments.

  • Method: Comparison against known standards.

Sampling Methods

  • Types:

    • Random sampling

    • Stratified sampling

    • Systematic sampling

    • Convenience sampling

Testing Methodologies

  • Can be qualitative or quantitative, destructive or non-destructive.

  • Examples include:

    • Chemical analysis

    • Mechanical testing

    • Microbiological testing

    • Electrical testing

Calibration Methods

  • Methods ensure proper adjustment and maintenance of equipment:

    • Direct comparison with reference standards

    • Calibration by substitution

    • Inter-laboratory comparisons

    • Proficiency testing

Importance of ISO/IEC 17025

  • Standard Definition: International standard for testing and calibration laboratories.

  • Purpose: Sets requirements for competence, impartiality, and consistent laboratory operations.

  • Benefits: Enhances credibility, trust among clients, and regulatory compliance.

ISO/IEC 17025 Elements

  1. Scope

  2. Normative References

  3. Terms and Definitions

  4. General Requirements

  5. Structural Requirements

  6. Resource Requirements

  7. Process Requirements

  8. Management Systems Requirements

Requirements for Impartial Operations

  • Importance of impartiality:

    • Objectivity: No conflicts of interest.

    • Commitment from top management.

    • Responsibility among all personnel.

Documentation and Management

  • Ensure structured management with defined roles.

  • Document all procedures, including training for staff on impartiality.

Risk Management

  • Identify and manage risks related to impartiality.

  • Conduct risk assessments regularly.

Conclusion

  • Impartiality and Consistency: Critical to maintaining laboratory integrity and reliability of results.

  • Laboratories must establish systems and practices to uphold these standards effectively.