When is a product actually approved?
In product development, there is often a moment when everyone says:
“This is it.”
The customer likes the sample.
R&D is satisfied.
The performance is right.
The fragrance works.
The viscosity feels correct.
But if that approval is not formally documented, an important question remains:
What exactly did we approve?
Was it V03?
V04?
The sample with the new fragrance?
The version before the viscosity adjustment?
Was it tested in the final bottle?
Was the approved label already linked to that formulation?
A serious development process needs a clear point where the product stops being a moving target.
That is the purpose of the Golden Sample.
What is a Golden Sample?
A Golden Sample is the approved physical reference for the commercial product.
It is linked to the final product specification and represents the agreed characteristics of the product at the point of production release.
Depending on the product, those characteristics may include:
appearance
colour
fragrance
viscosity
pH
density
application behaviour
performance
packaging
formula revision
The Golden Sample is not simply:
the bottle everyone liked most.
It is part of a controlled approval package.
Why a physical reference matters
Documents are essential.
But some product characteristics are easier to understand physically.
For example:
fragrance
appearance
tactile behaviour
spray characteristics
wipe-off
visual finish
viscosity perception
A specification may say:
clear blue liquid
but the Golden Sample shows exactly what that means in practice.
The physical sample complements the written specification.
The Golden Sample does not replace specifications
This distinction is important.
A Golden Sample should not become:
“Just make it look like this.”
Commercial production needs measurable specifications and tolerances.
The strongest system therefore combines:
PHYSICAL REFERENCE
TECHNICAL SPECIFICATION
FORMULATION REVISION
APPROVED PACKAGING
CONTROL PARAMETERS
Together, these define the commercial product.
The approval package
A mature product approval can contain several connected elements.
1. FORMULA REVISION
Which exact formulation was approved?
Example:
Formula revision: PL-0248-F04
This ensures that future production does not accidentally use an earlier development version.
2. GOLDEN SAMPLE ID
The retained physical sample should have a unique identifier.
Example:
Golden Sample: GS-0248-01
This creates traceability between the physical sample and the product documentation.
3. PRODUCT SPECIFICATION
Relevant measurable characteristics may include:
appearance
colour
pH
viscosity
density
other product-specific parameters
The specification defines acceptable production limits.
4. APPLICATION CHARACTERISTICS
Depending on the product, approved characteristics may also include:
spray pattern
spread
dwell behaviour
wipe-off
foam
lubrication
drying
gloss
slickness
water behaviour
Not every characteristic needs a numeric value.
But important application behaviour should be understood.
5. PACKAGING
The commercial package should also be linked to the approved product.
This may include:
bottle
container material
closure
trigger
pump
pack size
label
carton
A formulation approved in one package is not automatically approved in every package.
6. REGULATORY STATUS
Before commercial release, the relevant documentation should be aligned with the approved formulation.
This can include:
classification
SDS
UFI / PCN where applicable
claims
label information
target-market requirements
The Golden Sample should therefore represent a product that is approaching or has reached commercial readiness.
Development approval vs production approval
These should not necessarily be the same event.
A useful distinction is:
TECHNICAL DEVELOPMENT APPROVAL
The customer and R&D agree:
The formulation meets the development brief.
This creates the Development Freeze.
Then the product moves into:
validation
packaging compatibility
regulatory work
production preparation
PRODUCTION APPROVAL
Once the relevant requirements have been completed, the project reaches:
Ready for production.
At that point the commercial reference can be finalized.
This prevents a laboratory prototype from being mistaken for a production-ready product.
Development Freeze
Approval should stop uncontrolled changes.
After technical approval, the formulation should enter a Development Freeze.
That means future changes should not happen casually.
For example:
“Could we make it slightly thicker?”
“Can we change the fragrance?”
“Can we make it a little darker?”
“Can we switch the trigger?”
These may appear minor.
But they can affect:
stability
compatibility
classification
filling
performance
documentation
production timing
A frozen product can still be changed.
But the change becomes controlled.
Change control
A useful rule is:
Every change after approval needs an identified reason, review and revision.
For example:
CHANGE REQUEST
Replace fragrance A with fragrance B.
REASON
Commercial preference.
POTENTIAL IMPACT
stability
colour
classification
SDS
UFI/PCN
packaging interaction
ACTION
Review / reformulate / retest as required.
NEW REVISION
PL-0248-F05
This preserves traceability.
Why version control matters
Without version control, production teams may receive instructions such as:
“Use the latest formula.”
That is dangerous.
What is “latest”?
A development file may contain:
V01
V02
V03
V03b
V04 trial
V04 fragrance test
V05 cost-down
Only one should be commercially approved.
The final formula should have an explicit status.
Product status should be visible
A useful internal system could use statuses such as:
CONCEPT
IN DEVELOPMENT
SAMPLE TESTING
TECHNICALLY APPROVED
VALIDATION
REGULATORY REVIEW
PRODUCTION READY
ACTIVE COMMERCIAL PRODUCT
This prevents ambiguity.
The Golden Sample should be retained
Where appropriate, both manufacturer and customer may retain approved reference samples.
This creates a common physical reference.
If a future question arises:
“Has the fragrance changed?”
“Was the original product this thick?”
“Has the colour shifted?”
the retained reference can help answer it.
Retained production samples are different
The Golden Sample is the approved commercial reference.
Production retain samples are typically samples retained from individual manufactured batches.
The two serve different purposes.
GOLDEN SAMPLE
Represents the approved target.
BATCH RETAIN
Represents what was actually manufactured in a particular batch.
Comparing the two can be useful during quality investigations.
Tolerances matter
Commercial production will not always be chemically identical down to every visible microscopic difference.
There may be normal acceptable variation.
For example:
slight colour variation
viscosity within an approved range
density within tolerance
The specification defines what is acceptable.
The Golden Sample should not create unrealistic expectations that every batch must be visually indistinguishable under every condition.
The objective is controlled consistency.
Not every characteristic needs the same tolerance
For one product, pH may be critical.
For another, viscosity may matter more.
For another, appearance may be commercially important.
QC limits should reflect the characteristics that matter to the product.
A generic specification applied to every SKU is not necessarily useful.
Example: shampoo
The approved product may define:
APPEARANCE
Clear liquid
COLOUR
Defined reference
FRAGRANCE
Approved fragrance profile
pH
Defined range
VISCOSITY
Defined range
APPLICATION
High lubricity, controlled foam, clean rinse
PACKAGING
500 ml bottle with approved cap
This becomes the reference for future production.
Example: spray sealant
Relevant approval characteristics may include:
appearance
fragrance
density
spray behaviour
wipe-off
gloss
slickness
water behaviour
final trigger
final bottle
If the trigger changes later, application behaviour may need to be reconsidered even if the formula remains unchanged.
Example: coating
For a coating, the reference package may need to consider:
formula revision
container
closure
fill volume
appearance
application window
wipe-off
curing behaviour
performance criteria
storage conditions
A coating can be particularly sensitive to packaging and storage.
The finished product therefore needs to be considered as a complete system.
The Golden Sample and customer disputes
A formal reference can also improve communication.
Suppose a customer later says:
“The new batch feels different.”
Without a reference, the discussion becomes subjective.
With:
Golden Sample
batch retain
production specification
QC results
the question can be investigated systematically.
That is better for both sides.
The Golden Sample and scale-up
The Golden Sample also helps ensure the transition from:
LABORATORY
to
PRODUCTION
does not unintentionally change the product.
The production team knows what they are trying to reproduce.
QC knows which characteristics matter.
The customer knows what was approved.
Everyone works from the same target.
Approval should include the customer
The customer should formally confirm that the product is approved.
This can be done through:
signed approval
digital approval
customer portal
documented email workflow
The important thing is that approval is explicit.
Not assumed.
Example approval statement
A simple approval can state:
The customer confirms that the identified sample and associated product specification represent the approved commercial product for production release, subject to defined manufacturing tolerances.
This makes the decision clear.
What happens after approval?
A mature workflow might look like:
DEVELOPMENT SAMPLE V04
↓
CUSTOMER APPROVAL
↓
DEVELOPMENT FREEZE
↓
VALIDATION
↓
REGULATORY / PACKAGING COMPLETION
↓
GOLDEN SAMPLE
↓
PRODUCTION READINESS REVIEW
↓
COMMERCIAL PRODUCTION
This creates a clean end to development.
Production Readiness Review
Before commercial production, confirm:
FORMULATION
Final revision identified.
CUSTOMER
Approval recorded.
SPECIFICATION
QC parameters defined.
GOLDEN SAMPLE
Reference retained.
PACKAGING
Approved.
REGULATORY
Required documentation completed.
ARTWORK
Approved.
RAW MATERIALS
Available and approved.
PRODUCTION METHOD
Defined.
LOGISTICS
Confirmed.
Only then should the product move into production.
Why this matters commercially
The benefit is not bureaucracy.
It is predictability.
A controlled approval system helps reduce:
wrong versions
unnecessary reformulation
production errors
customer misunderstandings
artwork mistakes
regulatory inconsistencies
repeated discussions about what was approved
That saves time throughout the product's commercial life.
Golden Sample as part of the brand relationship
For a private-label customer, this process also communicates something important:
Their product is treated as a defined technical asset.
Not simply as:
one more liquid being filled.
That distinction becomes increasingly important as:
volumes grow
distributors become involved
multiple countries launch
more SKUs are added
more people join the customer's organization
The system needs to work even when the people who originally developed the product are no longer involved in every production decision.
Digital Golden Sample Record
The physical sample can be supported by a digital record.
For example:
PRODUCT
Customer
Product name
SKU
Project ID
FORMULA
Approved formula revision
GOLDEN SAMPLE
Sample ID
Date
Location
SPECIFICATION
pH
Viscosity
Density
Appearance
Other parameters
APPLICATION
Approved characteristics
PACKAGING
Bottle
Trigger / closure
Pack size
REGULATORY
SDS version
UFI where applicable
Market status
ARTWORK
Approved artwork revision
APPROVAL
Customer
Infinitec R&D
Infinitec Quality
Date
This is exactly the type of information that can later live inside the Infinitec customer portal.
The future portal
Eventually, a customer could see:
CERAMIC SPRAY SEALANT
Status: ACTIVE COMMERCIAL PRODUCT
Formula revision
F04
Golden Sample
GS-0248-01
Approved
14 March 2027
Current SDS
Version 2.0
Artwork
Revision 04
Production specification
Current
Then:
That turns the website into a true product-development interface.
Change requests after launch
A commercial product may need to evolve.
Possible reasons include:
customer preference
new packaging
raw material availability
regulatory change
cost optimization
new market
product improvement
The correct response is not:
Never change the Golden Sample.
It is:
Control the change.
A new approved product revision can create a new reference.
The development history remains intact.
Never overwrite history
If Formula F04 becomes F05, do not simply replace every reference to F04.
Maintain:
F04 — superseded
F05 — current
This allows future questions to be answered.
The same applies to:
artwork
SDS
packaging
product specifications
Version history creates traceability.
The Infinitec approach
The Golden Sample concept creates a clear line between:
development
and
commercial manufacturing.
The process should answer:
What was approved?
Which formulation revision?
Which packaging?
Which characteristics?
Which documentation?
When?
By whom?
Once those questions have clear answers, the product is no longer simply a development sample.
It has become a controlled commercial product.
The key principle
Approval should not mean:
“This one seems good.”
It should mean:
“This is the product we have agreed to manufacture.”
That is the purpose of the Golden Sample.
Developing a product with Infinitec?
Our development process creates defined approval milestones from the first brief through commercial production.
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