Problem & answerB-01
Blend Not Uniform
Also covers: Colour streaks · mottling · fails blend uniformity
Likely causes
- Blend time too short
- Blender overfilled or underfilled
- Wrong order of addition
- Low-dose ingredient not pre-blended (no geometric dilution)
- Ingredients with very different particle size or density
- Lumps not removed by sieving
- Blender speed incorrect
How to fix it
- 1Do not discharge. Notify the supervisor.
- 2Check the actual blend time, speed and load against the BMR.
- 3Confirm the order of addition and that every ingredient was added.
- 4Blend for additional time only with supervisor or QA approval, and record it.
- 5Re-inspect; where testing is required, sample per the sampling plan.
- 6If the blend still fails, QA raises an OOS/deviation investigation to decide reprocess, reject or release.
It is fixed when
Uniform colour and texture with no streaks; blend uniformity results within acceptance criteria.
Stop it coming back
- Follow the validated blend time, speed and fill level.
- Pre-blend low-dose ingredients by geometric dilution.
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