Label durability cannot be determined from the material name alone. Container surface, application conditions, moisture, cleaning chemistry and abrasion all affect results.
Define the cycle
| Factor | Record in the trial |
|---|---|
| Surface | Material and cleaning state |
| Cold/damp | Actual process conditions |
| Washing | Method and product used |
| Contact | Abrasion or impact area |
Ask the supplier in writing for the exact label code, adhesive, compatible surface and application conditions.
Run a small site trial
Apply sample labels to the production surface; record preparation and conditions at application.
Run labels through routine chilling, condensation, washing and handling.
At each stage, note scan success, print readability and edge lift.
Photograph damage and the contact point affecting the label.
Set acceptance criteria
Record whether each barcode scans, and the reader and distance used.
| Check | Record |
|---|---|
| Scan | Read/not read, device |
| Adhesion | Edge lift or separation |
| Readability and wear | |
| Conditions | Wash/cold cycle |
A supplier lab test is not a field-life guarantee if it does not cover the same surface and cleaning conditions.
Repeat the trial with the next supply batch or reassess after a surface or cleaning-method change.
Treat permanent container identity separately from changeable tracking information. Record retirement of an old number when replacing a barcode.
If a label falls off, do not print an arbitrary spare; have the inventory owner update the assignment record.
The tested label code and application conditions can be added to the purchase specification.
Do not accept based only on visual condition without a readability record.
Keep the supplier statement, site trial and acceptance criterion as separate records.
