A white sample is normally an unprinted structural prototype used to check dimensions, folds, joints, opening, closure, product fit and assembly. It may use substitute material or manual cutting unless the supplier confirms otherwise, so it does not automatically approve final colour, finish or production performance.

It can approve artwork placement, text, orientation and an agreed level of colour and finish appearance. The buyer must know whether it is digitally printed, press printed or hand finished, because a prototype process can differ from mass production.

A production sample should use the approved material specification, artwork, tooling and intended manufacturing route, usually from or immediately before the mass-production run. It is a stronger reference than a concept prototype, but acceptance criteria still need to be written.

No. A stock sample can demonstrate a general structure, surface or workmanship, but it does not prove buyer-specific dimensions, product fit, artwork, materials or performance. Treat it as a reference only unless every relevant specification matches.

It can check geometry when it uses the intended dimensions, board construction, insert and closure with the real product or a controlled equivalent. It does not by itself prove distribution performance, especially when materials or assembly differ from production.

Only if the parties explicitly define that role and its limitations. Different printing processes and substrates have different colour gamuts and surface effects. Critical colour should use an agreed proof or physical reference and be reviewed on the intended material and finish.

Manual cutting, wrapping, adhesive application and finishing can create different edges, joints, pressure and registration from production equipment. The supplier should identify prototype substitutions and expected production-route differences before the buyer signs approval.

Testing should use a complete product-package system representative of the intended production construction. If an early sample uses substitute materials or manual joints, its result may not represent production. Select the test for the actual distribution route and retest after material or process changes.

Changes to dimensions, product mass, insert, board, paper, artwork, finish, closure or manufacturing route should be reviewed for impact. Significant changes may require a revised sample, new colour approval or repeat performance testing before production continues.

Record sample type, version, dimensions, materials, artwork revision, colours, finishes, insert, closure, known substitutions, acceptance limits, approved date and approver. Photographing or retaining a signed control sample can support communication, but it does not replace a written specification.

No. They depend on structure, tooling, material sourcing, print process, finishing, hand work, number of units and testing. Ask UGI Packging to identify the sample route, setup requirements, expected differences and quotation for the actual project.