Many disputes between brands and factories do not come from bad faith. They come from nobody writing down in advance what «a conforming product» means. The commercial contract sets price, quantity and delivery date, but it rarely answers questions like: how much colour difference between two batches is acceptable? Who is told when a raw material supplier changes? That is the job of a quality agreement, a standalone document or contract annex signed before the first batch.
What is a quality agreement, and why do you need one?
It is a document that defines each party's responsibilities for product quality: approved specifications, inspection methods, what happens when a deviation appears, and how changes are managed. It turns opinions into measurable criteria. When a problem occurs, an agreed text settles it faster and more calmly than an open debate. This article is guidance, not legal advice; have a qualified professional review the final wording for your country.
The core clauses
1. Approved specifications
Attach a specification per product: appearance, colour, scent, acceptance limits for key physical and chemical properties, and bottle, closure and label details. Tie it to a reference sample signed by both parties, because words alone stay open to interpretation. For argan oil, the specification usually states the grade (cosmetic or culinary) and the reference test method.
2. Acceptance criteria and sampling
Define how each batch is inspected before shipping and on receipt. Many parties use AQL sampling plans based on ISO 2859-1 for visible defects in packaging and labels. Agree what counts as critical versus minor, the sample size and the acceptance level. Avoid vague wording like «high quality».
3. Certificate of analysis for every batch
Require each batch to arrive with a document showing its lot number and results against the specification.
4. Change control
This is the most neglected clause. The factory must not change formula, supplier, process or packaging materials without prior notice and written approval, with a stated notice period. A small switch of bottle or pump supplier can change stability or appearance.
5. Deviation and non-conformance handling
Set clear steps: how quickly problems are reported, sending photos and samples, root-cause investigation, corrective action, and disposition options (rework, replacement, destruction or another agreed outcome). Also set a deadline for raising quality complaints after receipt so the matter does not stay open forever.
6. Retention samples and records
The factory should keep a sample from each batch and the production records for an agreed period, usually longer than the product's shelf life. See our article on a product recall plan to understand why these matter in a crisis.
7. Audit rights
Agree on site visits or remote reviews, with advance notice and a defined scope. Serious factories welcome this because it builds trust.
8. Cooperation on recalls and complaints
State who leads a recall, how batches are traced, and who bears cost depending on the cause. Settling this before a crisis saves precious days.
Responsibilities table: who does what?
| Area | Brand | Manufacturer |
|---|---|---|
| Specifications and reference sample | Approves and signs | Complies and documents |
| Label and claims | Responsible for content and compliance in its market | Prints to the approved artwork and flags any visible conflict |
| Batch inspection | Inspects on receipt | Inspects before shipping and attaches analysis |
| Material or formula changes | Approves in writing | Notifies before implementing |
| Retention samples and records | Requests and reviews | Keeps for the agreed period |
Responsibility splits vary by country and project, so adapt this table with legal guidance.
Steps to prepare the agreement
- Gather specifications, the reference sample and approved packaging artwork.
- Define critical, major and minor defects with photo examples.
- Agree the sampling plan and acceptance levels.
- Write reporting and response deadlines for each type of issue.
- Require advance notice of any change.
- Set retention periods for samples and records.
- Sign it and attach it to the purchase order or contract.
- Review it yearly or when adding new products.
Common mistakes
- Verbal specifications or requirements scattered across messages.
- No signed reference sample.
- No complaint deadline.
- Ignoring change control until a different-looking batch arrives.
- A long, complicated document nobody reads; short and precise works better.
FAQ
Is the commercial contract enough?
Usually not. It covers price, delivery and payment, while a quality agreement details criteria, inspection and change control. The two complement each other.
Is it suitable for small brands and first orders?
Yes, in a simple two- or three-page version covering the specification, reference sample, acceptance criteria and complaint procedure.
How much colour or scent variation between batches is acceptable?
It depends on the product; natural ingredients vary slightly. Define an acceptable range with reference samples for the lower and upper limits rather than demanding perfect identity.
Who pays for a non-conforming batch?
It depends on the cause: a manufacturing fault, a specification issue, or materials supplied by the brand. The agreement should settle this in advance.
Conclusion
A quality agreement does not signal distrust. It makes trust workable because everyone knows what is expected. If you are planning a private label product, read how we work and see our services, then request a quote at assilouargane.com/quote so we can define specifications and acceptance criteria from day one.
