The short answer
Evaluate clarity, colour consistency, surface appearance and decoration using agreed viewing conditions. Judge the bottle with the intended liquid and background, not a supplier photograph alone.
Photography, lighting and the colour of the contents can change how glass appears. Terms such as high flint or super flint should be tied to the supplier’s actual specification and approved samples rather than treated as complete acceptance criteria.
Define a visual reference
Compare samples under consistent lighting, background and viewing distance. Identify which surfaces will be visible in the finished pack and which will be covered by labels or sleeves.
Check the decorated version
Coatings, frosting and printed panels can change the overall appearance. Approve the actual decoration combination and examine label edges, coverage and alignment. Record the chosen bottle and decoration revision together.
Procurement checklist
- Use consistent viewing conditions.
- Inspect empty and filled samples.
- Record agreed colour and appearance references.
- Assess label and decoration interaction.
- Compare production samples with the approved pack.
Common question
Can product photographs prove the glass colour is consistent?
No. Images are useful for selection but can be affected by lighting and editing. Use identified physical samples and agreed visual or measurement criteria for approval.