Why Does a Lotion Pump Stop Working Before the Bottle Is Empty?
September 24, 2025
A pump that stops early may be starved of reachable product, lose prime, or become restricted. Use a controlled low-fill diagnosis before changing components.
Lotion pump evacuation testing is the controlled verification of how much product a pump system delivers before dispensing becomes unacceptable, and how consistently that endpoint occurs. A meaningful test uses the final bottle, pump, dip tube and formula, defined fill levels, orientation changes, repeated actuation and measurable acceptance criteria such as residual mass or remaining dose. It should capture priming, low-fill behavior and end-of-life performance rather than only a first-stroke check. For packaging buyers, evacuation testing turns field complaints into reproducible evidence for sample approval, supplier comparison and specification changes.
A pump that stops early may be starved of reachable product, lose prime, or become restricted. Use a controlled low-fill diagnosis before changing components.
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