Name every contact component
Ask the actual supplier to identify the pump pathway, gasket, tube and any other formula-contact parts. The exterior colour does not disclose the internal construction or material grades.

DF-P100 / PUMP-BOTTLE STUDY
A quiet cylinder and a deliberate dispensing gesture. Begin with the pump pathway, then make the colour and silhouette work around the unresolved technical questions.
Ask the actual supplier to identify the pump pathway, gasket, tube and any other formula-contact parts. The exterior colour does not disclose the internal construction or material grades.
A handling review can ask about actuation, priming and the user task. A technical trial must use the agreed formula and conditions, with criteria owned by the responsible reviewer. Do not turn a screen interaction into a dosing claim.
Keep the bottle, closure, tube length and decoration references together. If one changes, identify what must be re-reviewed rather than silently carrying an earlier approval to a new configuration.
TAKE THESE FOUR QUESTIONS
CONTINUE THE STUDY