Calibration Documents: Balance Calibration Weight 20 g (CAL-0334)

Asset ID	CAL-0334
Equipment	Balance Calibration Weight 20 g
Equipment Type	Standard Weight
Department	Calibration Lab
Area/Location	Metrology
Process Use	Mass standard
Parameter	Weight
Units	g
Range Min	20
Range Max	20
Acceptance Criteria	Class F1/E2
Calibration Frequency (days)	365
Calibration Type	External
Traceability	ISO17025

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Calibration SOP

1. Purpose

The calibration of the Balance Calibration Weight 20 g is performed to ensure accuracy in mass measurements, which is critical for maintaining patient safety, ensuring batch quality, and preserving data integrity. Accurate weight measurements are essential in pharmaceutical processes to prevent dosage errors that could impact product efficacy and safety.

2. Scope

• Asset ID: CAL-0334
• Equipment Name/Type: Balance Calibration Weight 20 g / Standard Weight
• Department/Area: Calibration Lab / Metrology
• Process Use: Mass standard
• Parameter: Weight
• Range: 20 g
• Units: g
• Calibration Frequency: 365 days

3. Definitions

• Calibration: The process of comparing a measurement standard to a known reference to determine its accuracy.
• Verification: The process of confirming that a measurement system is functioning correctly.
• Adjustment: The act of modifying a measurement system to bring it into alignment with a standard.
• As Found: The condition of the equipment prior to any adjustments being made.
• As Left: The condition of the equipment 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 a measurement system’s output 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 of a measurement lies.
• Intermediate Check: A periodic check of a measurement system to ensure it remains within specified limits.

4. References

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

5. Responsibilities

• Technician/Metrology: Perform calibration and document results.
• QC/QA Reviewer: Review calibration documentation and results for compliance.
• Owner Department: Ensure equipment is available and maintained.
• External Service Provider: Conduct external calibrations as required.

6. Safety & Preconditions

• Ensure environmental controls are in place (temperature, humidity).
• Allow equipment to warm up and stabilize before use.
• Maintain cleanliness of the calibration area and equipment.
• Check leveling of the balance calibration weight.
• Verify power supply stability and functionality.

7. Standards & Tools

• Reference Standards Required: Class F1/E2 calibration standards.
• Traceability Statement: Traceable to ISO17025.
• Certificate Validity Check: Ensure calibration certificates are current and valid.
• Standard ID: [TBD]

8. Calibration Strategy

Calibration will follow the As Found then As Left logic. A minimum of 5 measurement points will be taken, including endpoints and midpoints, to ensure accuracy across the specified range. Each point will be measured in triplicate to enhance reliability.

9. Step-by-Step Procedure

1. Preparation: Gather all necessary tools and reference standards.
2. Stabilization: Allow the equipment to stabilize in the calibration environment.
3. As Found checks and data capture: Measure the weight and record the initial readings.
4. Adjustment rules: If OOT is detected, escalate for adjustment as per SOP.
5. As Left verification: Measure again to confirm adjustments are within specifications.
6. Labeling + documentation completion: Complete all required documentation and label the equipment accordingly.

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

10. Acceptance Criteria & Calculations

Acceptance criteria: Class F1/E2.

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

Pass/Fail Logic: If error is within acceptance criteria, pass; otherwise, fail.

Rounding rule: [TBD]

11. Handling OOT / Failures

• Immediate containment: Tag equipment and cease use.
• Notification & deviation initiation: Notify relevant personnel of the OOT condition.
• Impact assessment trigger: Review affected results/batches within the defined impact window.
• Recalibration after repair/adjustment: Ensure recalibration is performed post-adjustment.
• QA disposition: [TBD]

12. Records & Retention

• Logbook entries: Document all calibration activities.
• Calibration report/certificate filing: Maintain records as per regulatory requirements.
• e-Records if applicable: [TBD]
• Label content requirements: Include calibrated date, due date, technician name, and 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 warmed up and stabilized
• Calibration area cleaned
• Leveling checked
• Power supply verified

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-0334	Balance Calibration Weight 20 g	Standard Weight	Calibration Lab	Metrology	Mass standard	Weight	g	20 – 20	Class F1/E2	365 days	External	ISO17025

Environmental Conditions

Temperature: [TBD]

Relative Humidity: [TBD]

Vibration: [TBD]

Drafts: [TBD]

Test Point Selection

Test points for calibration will be selected as follows:

• Minimum: 20 g
• 25%: 20 g
• 50%: 20 g
• 75%: 20 g
• Maximum: 20 g

Results Table

Test Point	Ref Value	Observed (As Found)	Error	Limit	Pass/Fail	Observed (As Left)	Error	Pass/Fail
20 g	20 g	[TBD]	[TBD]	[TBD]	[TBD]	[TBD]	[TBD]	[TBD]

Stepwise Instructions

1. Preparation: Ensure the calibration weight is clean and free from contaminants.
2. Stabilization: Allow the calibration weight to acclimate to the environmental conditions for at least [TBD] minutes.
3. Performing Readings: Take three replicate measurements at each test point to ensure accuracy.
4. Calculating Error: Calculate the error by comparing the observed value to the reference value.
5. Evaluation: Compare the calculated error against the acceptance criteria.
6. Documentation: Record all observations, calculations, and results in the calibration log.

Deviation Instruction for OOT

If any observed value falls outside the acceptance criteria:

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

Approvals

Prepared By	Reviewed By	Approved By
____________________ / Date: ___________	____________________ / Date: ___________	____________________ / Date: ___________

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Calibration Checklist

Asset ID	Equipment	Dept	Area	Parameter	Range	Acceptance	Frequency	Traceability
CAL-0334	Balance Calibration Weight 20 g	Calibration Lab	Metrology	Weight	20 g	Class F1/E2	365 days	ISO17025

Pre-calibration

• [ ] Verify environmental conditions are within specified limits
• [ ] Ensure equipment has warmed up for the required duration
• [ ] Clean the calibration weight and surrounding area
• [ ] Level the balance if applicable
• [ ] Confirm reference standards are valid and calibrated
• [ ] Ensure logbook is ready for documentation

As Found Execution

• [ ] Set the balance to specified setpoints
• [ ] Perform repeat measurements for accuracy
• [ ] Record all raw data accurately
• [ ] Perform necessary calculations for results

OOT Immediate Actions

• [ ] Tag out the equipment
• [ ] Stop use of the equipment immediately
• [ ] Notify the appropriate personnel
• [ ] Document the deviation
• [ ] Trigger impact review process

As Left Verification

• [ ] Conduct post-adjustment checks
• [ ] Confirm all results are within specified limits

Documentation & Closure

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

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Deviation Impact Assessment

Event Summary
Asset: Balance Calibration Weight 20 g Date: [TBD] Discovered By: [TBD] Document References: [TBD] As Found Results Summary: [TBD]

Immediate Containment Checklist

• Stop use of the asset
• Label/tag the asset as out of tolerance
• 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-0334	Balance Calibration Weight 20 g	Standard Weight	Calibration Lab	Metrology	[TBD]	[TBD]	[TBD]	Weight / 20 g / g	Class F1/E2

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 (g)	Acceptance Criteria	Pass/Fail
1	[TBD]	Class F1/E2	[TBD]
2	[TBD]	Class F1/E2	[TBD]
3	[TBD]	Class F1/E2	[TBD]
4	[TBD]	Class F1/E2	[TBD]
5	[TBD]	Class F1/E2	[TBD]

As Left Results

Test Point	Measured Value (g)	Acceptance Criteria	Pass/Fail
1	[TBD]	Class F1/E2	[TBD]
2	[TBD]	Class F1/E2	[TBD]
3	[TBD]	Class F1/E2	[TBD]
4	[TBD]	Class F1/E2	[TBD]
5	[TBD]	Class F1/E2	[TBD]

Measurement Uncertainty Statement: [TBD]

Statement of Conformity: [TBD]

Remarks: [TBD]

Signatures

Performed by: ____________________ Date: ___________

Checked by: ______________________ Date: ___________

Approved by: _____________________ Date: ___________

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