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Run: Color Matching and Delta-E Measurement Log - Coating and Print

Log spectrophotometer L*a*b* readings and Delta-E against an approved master for coated or printed parts. Use it to catch color drift early, document non-con...

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Job and Master Standard Identification

Job or work order number recorded critical (required)

Product name, SKU, or part number recorded critical (required)

Approved master standard identified critical (required)

Record the master sample, control target, or approved reference used for comparison.

Measurement location or sample ID recorded

Identify the panel, sheet, roll position, or coated part location measured.

Inspection stage selected

Instrument and Test Conditions

Spectrophotometer model and asset ID recorded critical (required)

Instrument calibration verified before use critical (required)

Yes No N/A

Measurement geometry and illuminant recorded

Record the measurement setup used, such as geometry and illuminant/observer settings.

Aperture size recorded

Record the aperture or measurement area used for the reading.

Sample surface condition acceptable for measurement critical (required)

Confirm the surface is clean, dry, and free of obvious contamination, gloss defects, or handling damage.

Yes No N/A

Environmental conditions recorded

Record relevant conditions if required by the procedure, such as temperature, humidity, or cure status.

Color Measurement Results

Master L* value critical (required)

Master a* value critical (required)

Master b* value critical (required)

Sample L* value critical (required)

Sample a* value critical (required)

Sample b* value critical (required)

Delta-E value recorded critical (required)

Record the measured Delta-E against the approved master. Use the site standard if a different tolerance applies.

Color match result critical (required)

Control Limits and Visual Verification

Delta-E within control limit critical (required)

Confirm the measured Delta-E is within the approved tolerance or control limit for this product.

Yes No N/A

L* deviation from master recorded

Record the absolute or signed deviation from the master, per site procedure.

a* deviation from master recorded

b* deviation from master recorded

Visual match acceptable under standard lighting

Confirm the sample visually matches the approved master under the required viewing conditions.

Yes No N/A

Deficiencies, Corrective Action, and Sign-off

Non-conformance or deficiency noted critical (required)

Mark yes if any reading, visual check, or setup condition is outside tolerance or procedure.

Yes No N/A

Corrective action documented

Document actions such as rework, process adjustment, rematch, or escalation to quality.

Disposition selected

Inspector signature critical (required)

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