Calibration Documents: Precision Balance 0.01 g (CAL-0003)

Asset ID	CAL-0003
Equipment	Precision Balance 0.01 g
Equipment Type	Precision Balance
Department	QC
Area/Location	Weighing Room
Process Use	Material weighing
Parameter	Weight
Units	g
Range Min	0
Range Max	5000
Acceptance Criteria	±0.01 g
Calibration Frequency (days)	365
Calibration Type	External
Traceability	ISO17025

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Calibration SOP

1. Purpose

The calibration of the Precision Balance 0.01 g is performed to ensure accurate weight measurements critical for material weighing in the QC department. This calibration controls risks associated with accuracy, patient safety, batch quality, and data integrity, thereby ensuring compliance with regulatory standards.

2. Scope

• Asset ID: CAL-0003
• Equipment Name/Type: Precision Balance 0.01 g / Precision Balance
• Department/Area: QC / Weighing Room
• Process Use: Material weighing
• Parameter: Weight
• Range: 0 g to 5000 g
• Units: g
• Calibration Frequency: 365 days

3. Definitions

• Calibration: The process of verifying and adjusting the accuracy of an instrument.
• Verification: Confirmation that the instrument meets specified requirements.
• Adjustment: The process of modifying the instrument to meet specified accuracy.
• 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 instrument’s measurements fall outside specified acceptance criteria.
• Drift: The gradual change in an instrument’s accuracy 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 expected to lie.
• Intermediate Check: A periodic check to ensure the instrument remains within specified limits between calibrations.

4. References

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

5. Responsibilities

• Technician/Metrology: Perform calibration and maintain records.
• QC/QA Reviewer: Review calibration results and documentation.
• Owner Department: Ensure equipment is available and in good condition for calibration.
• External Service Provider: Conduct external calibration 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 balance and surrounding area.
• Check that the balance is level before calibration.
• Verify power supply stability and functionality.

7. Standards & Tools

• Reference Standards: Calibration weights traceable to ISO17025.
• Traceability Statement: Calibration performed using standards 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. The minimum number of test points will be 5, including endpoints (0 g and 5000 g) and midpoints. Each point will have 3 replicate readings to ensure accuracy and reliability.

9. Step-by-Step Procedure

1. Preparation: Gather all necessary tools and calibration weights.
2. Stabilization: Allow the balance to warm up for at least 30 minutes.
3. As Found checks and data capture: Record initial measurements using calibrated weights.
4. Adjustment rules: If any measurement is OOT, follow the adjustment protocol; if adjustments are not allowed, escalate to QA.
5. As Left verification: After adjustments, recheck measurements to confirm they are within acceptance criteria.
6. Labeling + documentation completion: Label the equipment and complete all required documentation, ensuring raw observations are recorded contemporaneously (ALCOA+).

10. Acceptance Criteria & Calculations

Acceptance criteria for the Precision Balance 0.01 g is ±0.01 g. The error calculation formula is:

Error = Observed Value – True Value

Pass/Fail Logic: If the absolute value of the error is less than or equal to ±0.01 g, the calibration passes; otherwise, it fails.

Rounding rule: [TBD]

11. Handling OOT / Failures

• Immediate containment: Tag the equipment and stop its use.
• Notification & deviation initiation: Notify QA and initiate a deviation report.
• Impact assessment trigger: Define the impact window and review affected results/batches.
• Recalibration after repair/adjustment: Schedule recalibration once adjustments are made.
• QA disposition: [TBD]

12. Records & Retention

• Logbook entries: Document all calibration activities in the logbook.
• Calibration report/certificate filing: Maintain all calibration certificates in a designated file.
• 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 warm-up completed
• Balance leveled
• Calibration weights available

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-0003	Precision Balance 0.01 g	Precision Balance	QC	Weighing Room	Material weighing	Weight	g	0 – 5000	±0.01 g	365 days	External	ISO17025

Environmental Conditions

Temperature: [TBD]

Relative Humidity: [TBD]

Vibration: [TBD]

Drafts: [TBD]

Test Point Selection

Test points will be selected as follows based on the range of 0 to 5000 g:

• Min: 0 g
• 25%: 1250 g
• 50%: 2500 g
• 75%: 3750 g
• Max: 5000 g

Results Table

Test Point	Ref Value	Observed (As Found)	Error	Limit	Pass/Fail	Observed (As Left)	Error	Pass/Fail
0 g	[TBD]	[TBD]	[TBD]	±0.01 g	[TBD]	[TBD]	[TBD]	[TBD]
1250 g	[TBD]	[TBD]	[TBD]	±0.01 g	[TBD]	[TBD]	[TBD]	[TBD]
2500 g	[TBD]	[TBD]	[TBD]	±0.01 g	[TBD]	[TBD]	[TBD]	[TBD]
3750 g	[TBD]	[TBD]	[TBD]	±0.01 g	[TBD]	[TBD]	[TBD]	[TBD]
5000 g	[TBD]	[TBD]	[TBD]	±0.01 g	[TBD]	[TBD]	[TBD]	[TBD]

Stepwise Instructions

1. Preparation: Ensure the Precision Balance is clean and free from any obstructions. Verify that the calibration weights are available and within their calibration date.
2. Stabilization: Turn on the Precision Balance and allow it to warm up for at least 30 minutes.
3. Performing Readings:
   • Place the calibration weight corresponding to each test point on the balance.
   • Record the observed weight (As Found) for each test point.
   • Repeat the measurement three times for each test point to ensure accuracy.
4. Calculating Error: Calculate the error for each test point using the formula: Error = Observed Value – Reference Value.
5. Evaluation: Compare the calculated error against the acceptance criteria of ±0.01 g.
6. Documentation: Complete the results table and ensure all data is recorded accurately and legibly.

Deviation Instruction for OOT

If any test point fails to meet the acceptance criteria:

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

Approvals

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

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Calibration Checklist

Asset ID	Equipment	Dept	Area	Parameter	Range	Acceptance	Frequency	Traceability
CAL-0003	Precision Balance 0.01 g	QC	Weighing Room	Weight	0 – 5000 g	±0.01 g	365 days	ISO17025

Pre-calibration

• [ ] Verify environmental conditions are within specifications
• [ ] Allow equipment to warm up for the specified duration
• [ ] Clean the balance and surrounding area
• [ ] Level the balance using built-in leveling feet
• [ ] Confirm validity of reference standards
• [ ] Ensure logbook is ready for data entry

As Found Execution

• [ ] Set balance to specified setpoints
• [ ] Perform multiple repeat measurements
• [ ] 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 deviation in the logbook
• [ ] Trigger impact review process

As Left Verification

• [ ] Conduct post-adjustment checks
• [ ] Confirm all measurements are within acceptance limits

Documentation & Closure

• [ ] Update equipment label with calibration status
• [ ] Attach calibration certificate to the logbook
• [ ] Obtain reviewer sign-off
• [ ] Update next due date in the logbook

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

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Deviation Impact Assessment

Event Summary
Asset: Precision Balance 0.01 g 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-0003	Precision Balance 0.01 g	Precision Balance	QC	Weighing Room	[TBD]	[TBD]	[TBD]	Weight (0 – 5000 g)	±0.01 g

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
0 g	[TBD]	±0.01 g	[TBD]
1000 g	[TBD]	±0.01 g	[TBD]
2000 g	[TBD]	±0.01 g	[TBD]
3000 g	[TBD]	±0.01 g	[TBD]
4000 g	[TBD]	±0.01 g	[TBD]

As Left Results

Test Point	Measured Value (g)	Acceptance Criteria	Pass/Fail
0 g	[TBD]	±0.01 g	[TBD]
1000 g	[TBD]	±0.01 g	[TBD]
2000 g	[TBD]	±0.01 g	[TBD]
3000 g	[TBD]	±0.01 g	[TBD]
4000 g	[TBD]	±0.01 g	[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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