CMC qualification guide
CMC RFQ Parameters and Sample Testing Plan
A good CMC RFQ tells the supplier how the material will be used and tested. A good sample plan records preparation, conditioning, measurements and acceptance decisions.
Direct answer
Issue the same application brief, analytical specification and test procedure to every source. Code the samples, test against a control, repeat critical measurements and record deviations.
Do not approve a grade only because its supplier COA fits a range. Confirm identity and incoming properties, then test the material in the intended system.
Use one sample identity chain
Assign a code to each sample and retain the supplier, grade/model, source, batch, received date and document set in a restricted register. Laboratory worksheets may use the code while commercial approval remains linked to the original identity.
A first commercial lot should repeat critical incoming checks and the buyer-defined application confirmation before routine approval.
A practical buyer decision path
Define
Application, specification, quantity, destination and evidence needs.
Compare
Align supplier responses, methods, exclusions and commercial basis.
Verify
Check the agreed company, product, document or on-site scope.
Control
Record samples, approvals, changes, inspection and shipment milestones.
Close
Deliver the agreed record, open-item list and next-step decision.
Why it matters
CMC performance is method-sensitive. Differences in hydration, water, shear, temperature and measurement can overwhelm genuine product differences.
A documented plan creates a defensible path from sample to first commercial lot and routine incoming control.
Buyer decision criteria
- Application, formulation and target function
- Reference product and current performance baseline
- Analytical methods and acceptance ranges
- Solution-preparation and conditioning procedure
- Application-test endpoints and decision weighting
- Scale-up trial, lot consistency and change notification
Specification checklist
| RFQ block | Required detail | Sample test |
|---|---|---|
| Application | Use point, formulation, dosage and target function | Run in the representative formulation or fluid |
| Analytical | Viscosity method, substitution, purity, moisture and particles | Confirm critical incoming properties |
| Make-down | Water, addition sequence, shear, time and temperature | Record dissolution, lumps, gels and solution appearance |
| Performance | Named endpoints, controls and acceptance bands | Compare coded samples using repeats |
| Commercial lot | Packing, lot size, COA and change rules | Confirm first lot against the approved baseline |
Document checklist
- Completed application questionnaire
- Controlled RFQ specification and test methods
- TDS, SDS and representative COA
- Sample identity and chain-of-custody record
- Raw data, observations and comparison summary
- Approved-sample decision and first-lot validation plan
Common mistakes
- Letting each source choose a different viscosity method
- Testing unlabeled samples without chain of custody
- Changing several formulation variables at once
- Ignoring dissolution time or insoluble material
- Skipping first-commercial-lot confirmation after sample approval
Questions to ask suppliers
- Can you report results using our specified methods?
- Is the sample representative of the proposed manufacturing source and commercial grade?
- What lot-to-lot control ranges are used?
- What support is available during formulation or process trials?
- What changes trigger customer notification and requalification?
Related products and pages
Frequently asked questions
Can this guide replace a project-specific specification?
No. Use it to prepare questions and controls, then obtain the required technical, regulatory and legal review for the actual project.
Does this guide confirm a particular supplier?
No. Supplier identity, capability and evidence are reviewed privately against a qualified buyer requirement.
What should a buyer send for review?
Send the application, specification or drawing, quantity, destination, timing, packing and required tests or documents.
Sources & references
This guide is a controlled procurement and laboratory workflow. It does not prescribe a universal CMC specification or test method.
Supplier TDS, SDS, COA, sample identity and commercial information are retained as private project evidence.
Send us your sourcing requirement
Share the specification, quantity, destination and required documents. We will review the request before matching a suitable supply source.
Review and evidence note
Last reviewed: 2026-09-07
Test methods and acceptance criteria in this guide are templates. The buyer should approve application-specific methods and qualified personnel should interpret results.
Final product availability, specification, documentation and commercial terms are confirmed during supplier matching and quotation.