When qualifying a supplier for 60-mesh monosodium glutamate, approve the material against your seasoning process. Request an identified sample, compare it with your current ingredient under matched mixing conditions, and agree how blend results will be assessed before testing. The completed trial record should name the material, application and specification approved for purchasing.
1. Define the proposed material before opening the sample
Ask the supplier to confirm the proposed 60-mesh grade and provide its sieve distribution. Record the sieve standard, the proportions passing and retained, and whether the submitted sample represents the material intended for the order.
Create a sample record containing supplier name, manufacturer identity, sample code, batch reference, dispatch date and receipt condition. Attach the proposed specification and available batch documentation. If the code on the bag does not match the paperwork, resolve the discrepancy before the trial. A successful blend result cannot establish which commercial batch an unidentified sample represents.
2. Write a controlled mixing trial brief
Start with one representative seasoning formula and a clear comparison question: can the candidate material meet the existing blend acceptance criteria on this line? Keep ingredient proportions, other raw-material batches, addition sequence, mixer loading and mixing programme consistent where practical. Record unavoidable changes rather than interpreting them as an ingredient effect.
Use the current approved MSG as the reference if one exists. If the formulation is new, have the formulation and quality teams define the target before viewing candidate results. Batch size, mixing duration and sampling quantities should follow the plant's established procedures and the recorded trial plan.
Agree the evaluation method in advance. Appearance and tasting can contribute useful observations, but neither alone demonstrates MSG distribution throughout a blend. If uniformity is a release requirement, ask the quality team or a suitable laboratory to select a measurement that can distinguish the relevant ingredient variation within the actual seasoning matrix.
3. Use a sampling plan that supports the approval decision
Draw the sampling locations and stages on the trial sheet before running the mixer. Capture separate, identified samples rather than combining everything into one average. Include the plant's chosen mixer or discharge locations and, where relevant, finished packs across the discharge sequence. Keep sample collection consistent between the reference and candidate runs.
| Record field | What to enter | Why it affects approval |
|---|---|---|
| Material identity | Reference or candidate; supplier sample and batch codes | Connects the result to the material being purchased |
| Trial conditions | Formula revision, mixer, load, sequence and programme | Shows whether the comparison was controlled |
| Sampling point | Location, process stage, collection order and time | Prevents unlike samples being compared |
| Analytical result | Method, unit, laboratory reference and reported uncertainty where available | Makes the result interpretable against the agreed criterion |
| Decision | Acceptance criterion, result, reviewer and unresolved issue | Creates an auditable reason to accept, repeat or stop |
Photograph the sample labels and retain material under the plant's existing retention procedure. If a sample is missed or collected from the wrong point, mark the gap. Do not silently substitute a different collection location, because that weakens the comparison you are trying to make.
4. Investigate exceptions before expanding approval
Review process deviations alongside laboratory and sensory observations. An unexpected result may require checking sample identity, collection practice, the other ingredients or trial settings before assigning a cause. Repeat only the comparison needed to resolve the identified question, with a written reason for the repeat.
A candidate that passes one formula on one mixer is approved for that documented scope. A new formula, different loading pattern or changed supplier specification may require further assessment. Record the approved combinations in the production purchasing specification.
Keep rejected and approved candidate codes separate. If a supplier submits a replacement sample after a failed run, give it a new trial identity and record what changed. Carrying the old code forward makes later batch comparisons difficult and can lead purchasing to order the wrong material.
5. Convert the trial result into an order requirement
The approval record should name the accepted sample, specification revision, allowed application, trial report and any conditions still outstanding. Purchasing can then request a quotation against those identifiers, with required packing, quantity, destination and documentary requirements stated separately. Confirm the offered packing format rather than inferring it from a general description such as bulk bags.