Quick answer
Net-weight filling measures the pack or product mass during the dose and can suit variable density or larger quantities. Flowmeter filling measures mass or volume in the line depending on meter type and can support faster controlled flow. Select by declared quantity, density, pack stability and required cycle time.
Side-by-side comparison
| Decision factor | Net-weight filling | Flowmeter filling |
|---|---|---|
| Measured result | Mass on load cells | Mass or volume depending on meter |
| Container role | Pack sits on or is associated with a weighing station | Container is not the measuring instrument |
| Tare | Can zero or account for container weight | Dose measurement is independent of container tare |
| Density | No conversion for mass declaration | Volumetric meters need density for mass conversion |
| Large packs | Commonly attractive for larger fills | Suitable with correctly sized flow path and meter |
| Movement | Liquid movement and vibration affect settling | Bubbles and flow profile affect meter result |
| Feedback | Direct pack-weight result | Direct delivered-flow result; final pack can be checked separately |
| Changeover | Weigh platform and container handling matter | Meter range, valves and product path matter |
Decision checks
- Declared mass or volume
- Container and tare variation
- Density and temperature range
- Pack size and stability
- Bubbles, foam and product conductivity
- Flow-rate turndown and cut-off
- Required speed and verification method
How to prove the choice
Use multiple container tare batches and product density or temperature conditions. Compare final net content, cycle time, overshoot, drips and recovery after supply interruption.
Relevant specialist route
View the solutionweighfillers.co.ukWeigh Fillers
Net-weight and weigh-filling routes for controlled mass dosing.
Selection note: Do not select from a comparison table alone. Test representative product and packaging against a written acceptance plan.