Conductivity Meter Bench (CAL-0093) – Calibration Documents

Calibration Documents: Conductivity Meter Bench (CAL-0093)

Asset ID CAL-0093
Equipment Conductivity Meter Bench
Equipment Type Conductivity Meter
Department QC
Area/Location Chemistry Lab
Process Use Conductivity
Parameter Conductivity
Units µS/cm
Range Min 0
Range Max 2000
Acceptance Criteria ±1%
Calibration Frequency (days) 365
Calibration Type External
Traceability ISO17025

Table of Contents

  1. Calibration SOP
  2. Calibration Protocol
  3. Calibration Checklist
  4. Deviation Impact Assessment
  5. Calibration Certificate

Calibration SOP

1. Purpose

The calibration of the Conductivity Meter Bench (CAL-0093) is performed to ensure accurate measurement of conductivity, which is critical for maintaining batch quality and ensuring patient safety. Accurate conductivity measurements are essential for data integrity in the QC process, mitigating risks associated with inaccurate readings that could lead to product non-compliance.

2. Scope

  • Asset ID: CAL-0093
  • Equipment Name/Type: Conductivity Meter Bench / Conductivity Meter
  • Department/Area: QC / Chemistry Lab
  • Process Use: Conductivity
  • Parameter: Conductivity
  • Range: 0 – 2000 µS/cm
  • Units: µS/cm
  • Calibration Frequency: 365 days

3. Definitions

  • Calibration: The process of comparing a measurement instrument to a known standard to ensure accuracy.
  • Verification: The confirmation that a measurement instrument is functioning correctly.
  • Adjustment: The process of modifying a measurement instrument to bring it within specified limits.
  • As Found: The condition of the instrument prior to any adjustments.
  • As Left: The condition of the instrument after adjustments have been made.
  • OOT (Out of Tolerance): A condition where the measurement falls outside the specified acceptance criteria.
  • Drift: The gradual change in the output of a measurement instrument over time.
  • Traceability: The ability to verify the history, location, or application of an item by means of documented recorded identification.
  • Measurement Uncertainty: A parameter that characterizes the range of values within which the true value is asserted to lie.
  • Intermediate Check: A verification step performed between calibrations to ensure continued accuracy.

4. References

  • Company Metrology SOP [TBD]
  • ISO/IEC 17025 traceability via calibration certificates
  • ALCOA+ principles

5. Responsibilities

  • Technician/Metrology: Perform calibration and maintain documentation.
  • QC/QA Reviewer: Review calibration results and documentation for compliance.
  • Owner Department: Ensure equipment is available and in good condition for calibration.
  • External Service Provider: Conduct external calibration as per the defined schedule.

6. Safety & Preconditions

  • Ensure environmental controls are in place (temperature, humidity).
  • Allow equipment warm-up/stabilization time as per manufacturer guidelines.
  • Maintain cleanliness of the equipment and surrounding area.
  • Check leveling of the equipment to ensure accurate readings.
  • Verify power supply is stable and within required specifications.
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7. Standards & Tools

  • Reference Standards: [TBD]
  • Traceability Statement: ISO17025
  • Certificate Validity Check: Ensure calibration certificates are current and valid.

8. Calibration Strategy

The calibration will follow the As Found and As Left logic:

  • Minimum number of points: At least 5 points including endpoints (0, 2000) and midpoints.
  • Replicate readings at each point: 3 repeats as a best practice.

9. Step-by-Step Procedure

  1. Preparation: Gather all necessary tools and reference standards.
  2. Stabilization: Allow the Conductivity Meter to stabilize as per manufacturer guidelines.
  3. As Found checks and data capture: Record initial readings at defined points.
  4. Adjustment rules: If OOT is detected, follow adjustment protocols; if not allowed, escalate to QA.
  5. As Left verification: Confirm that adjustments bring the instrument within acceptance criteria.
  6. Labeling + documentation completion: Complete all required documentation and label the equipment accordingly.

Record raw observations contemporaneously to ensure data integrity (ALCOA+).

10. Acceptance Criteria & Calculations

Acceptance criteria: ±1%

Error calculation formula: Error (%) = (Observed Value – True Value) / True Value × 100

Pass/Fail logic: If error falls within ±1%, the calibration is considered a pass; otherwise, it is a fail.

Rounding rule: [TBD]

11. Handling OOT / Failures

  • Immediate containment: Tag equipment and stop use.
  • Notification & deviation initiation: Notify QA and initiate deviation process.
  • Impact assessment trigger: Define impact window and review of affected results/batches.
  • Recalibration after repair/adjustment: Schedule recalibration as necessary.
  • QA disposition placeholders: [TBD]

12. Records & Retention

  • Logbook entries: Document all calibration activities.
  • Calibration report/certificate filing: Maintain records as per company policy.
  • e-Records if applicable: [TBD]
  • Label content requirements: Calibrated date, due date, by whom, status.

13. Annexures

Annexure A: Calibration Data Sheet

Test Points Reference Observed Error Acceptance Pass/Fail As Found As Left
[TBD] [TBD] [TBD] [TBD] [TBD] [TBD] [TBD] [TBD]

Annexure B: Quick Checklist

  • Environmental controls verified
  • Equipment warm-up completed
  • Cleanliness checked
  • Leveling confirmed
  • Power supply stable

Annexure C: Example Label Text

Calibration Date: [TBD]

Due Date: [TBD]

Calibrated By: [TBD]

Status: [TBD]

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Calibration Protocol

Calibration Protocol

Protocol ID Asset ID Equipment Name Equipment Type Dept Area Process Use Parameter Units Range Acceptance Criteria Frequency Calibration Type Traceability
[TBD] CAL-0093 Conductivity Meter Bench Conductivity Meter QC Chemistry Lab Conductivity Conductivity µS/cm 0 – 2000 ±1% 365 days External ISO17025
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Environmental Conditions

Temperature: [TBD]

Relative Humidity: [TBD]

Vibration: [TBD]

Drafts: [TBD]

Test Point Selection

Test points will be selected based on the specified range of 0 to 2000 µS/cm:

  • Minimum: 0 µS/cm
  • 25% of Range: 500 µS/cm
  • 50% of Range: 1000 µS/cm
  • 75% of Range: 1500 µS/cm
  • Maximum: 2000 µS/cm

Results Table

Test Point Ref Value Observed (As Found) Error Limit Pass/Fail Observed (As Left) Error Pass/Fail
0 µS/cm [TBD] [TBD] [TBD] ±1% [TBD] [TBD] [TBD] [TBD]
500 µS/cm [TBD] [TBD] [TBD] ±1% [TBD] [TBD] [TBD] [TBD]
1000 µS/cm [TBD] [TBD] [TBD] ±1% [TBD] [TBD] [TBD] [TBD]
1500 µS/cm [TBD] [TBD] [TBD] ±1% [TBD] [TBD] [TBD] [TBD]
2000 µS/cm [TBD] [TBD] [TBD] ±1% [TBD] [TBD] [TBD] [TBD]

Stepwise Instructions

  1. Preparation: Ensure the Conductivity Meter Bench is clean and calibrated prior to use.
  2. Stabilization: Allow the equipment to stabilize for [TBD] minutes before taking measurements.
  3. Performing Readings: Take three replicate readings at each test point and record the values.
  4. Calculating Error: Calculate the error for each observed value against the reference value.
  5. Evaluation: Compare the calculated error to the acceptance criteria of ±1%.
  6. Documentation: Complete the results table and ensure all data is recorded accurately.

Deviation Instruction for OOT

If any observed value falls outside the acceptance criteria:

  • Stop use of the equipment immediately.
  • Notify the supervisor and quality assurance.
  • Open a deviation report.
  • Quarantine impacted results window: [TBD]
  • Await QA decision on further actions.

Approvals

Prepared By Reviewed By Approved By
[Signature/Date] [Signature/Date] [Signature/Date]

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Calibration Checklist

Asset ID Equipment Dept Area Parameter Range Acceptance Frequency Traceability
CAL-0093 Conductivity Meter Bench QC Chemistry Lab Conductivity 0 – 2000 µS/cm ±1% 365 days ISO17025

Pre-calibration

  • [ ] Verify environmental conditions are within specified limits
  • [ ] Allow equipment to warm up as per manufacturer guidelines
  • [ ] Clean the equipment as per SOP
  • [ ] Level the equipment if necessary
  • [ ] Confirm reference standards are valid and within expiration
  • [ ] Ensure calibration logbook is ready for entries

As Found Execution

  • [ ] Set the meter to specified setpoints
  • [ ] Perform repeat measurements for accuracy
  • [ ] Record all raw data accurately
  • [ ] Perform necessary calculations based on recorded data
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OOT Immediate Actions

  • [ ] Tag out the equipment if out of tolerance (OOT)
  • [ ] Stop use of the equipment immediately
  • [ ] Notify the supervisor and QA
  • [ ] Document deviation in the logbook
  • [ ] Trigger impact review as per SOP

As Left Verification

  • [ ] Perform post-adjustment checks to confirm accuracy
  • [ ] Ensure all measurements are within acceptance limits

Documentation & Closure

  • [ ] Update equipment label with new calibration date
  • [ ] Attach calibration certificate to logbook
  • [ ] Obtain reviewer sign-off on calibration documentation
  • [ ] Update next due date for calibration in logbook

Data Integrity (ALCOA+): Ensure all data is Attributable, Legible, Contemporaneous, Original, Accurate, and Complete.

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Deviation Impact Assessment

Event Summary
Asset: Conductivity Meter Bench
Date: [TBD]
Discovered By: [TBD]
Document References: [TBD]
As Found Results Summary: [TBD]

Immediate Containment Checklist

  • Stop use of the equipment
  • Label/tag the equipment as out of service
  • Segregate impacted work

Define Impact Window

Last known in-tolerance date: [TBD] to discovery date: [TBD]

Product/Batch/Test Impact Review

Batch/Study/Report ID Results Potentially Impacted Re-test/Re-weigh Decision
[TBD] [TBD] [TBD]

Data Integrity Review Prompts (ALCOA+)

  • Attributable: [TBD]
  • Legible: [TBD]
  • Contemporaneous: [TBD]
  • Original: [TBD]
  • Accurate: [TBD]
  • Complete: [TBD]
  • Consistent: [TBD]
  • Enduring: [TBD]
  • Available: [TBD]

Risk Assessment

Severity Probability Detectability Rationale Overall Risk
[TBD] [TBD] [TBD] [TBD] [TBD]

Investigation Summary

Root Cause: [TBD]

CAPA Plan

Action Owner Due Date Effectiveness Check
[TBD] [TBD] [TBD] [TBD]

QA Disposition

Release/Hold/Retest/Recall Triggers: [TBD]

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Calibration Certificate

Certificate No: [TBD]

Date: [TBD]

Next Due Date: [TBD]

Asset Details

Asset ID Equipment Name Equipment Type Dept Area Make/Model Serial No Location Parameter/Range/Units Acceptance Criteria
CAL-0093 Conductivity Meter Bench Conductivity Meter QC Chemistry Lab [TBD] [TBD] [TBD] Conductivity (0 – 2000 µS/cm) ±1%

Conditions

Environment: [TBD]

Reference Standards

Standard Name/ID Certificate No Due Date Traceability Statement
[TBD] [TBD] [TBD] ISO17025

Results

As Found Results

Test Point Measured Value (µS/cm) Pass/Fail
1 [TBD] [TBD]
2 [TBD] [TBD]
3 [TBD] [TBD]
4 [TBD] [TBD]
5 [TBD] [TBD]

As Left Results

Test Point Measured Value (µS/cm) Pass/Fail
1 [TBD] [TBD]
2 [TBD] [TBD]
3 [TBD] [TBD]
4 [TBD] [TBD]
5 [TBD] [TBD]

Measurement Uncertainty Statement: [TBD]

Statement of Conformity: [Pass/Fail overall]

Remarks: [TBD]

Signatures

Performed by: ____________________ Date: __________

Checked by: ______________________ Date: __________

Approved by: _____________________ Date: __________

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