Funnel vs. syringe: Choosing the right filling method for reliable density measurements
Reliable density measurements require different filling methods based on sample properties. This report compares syringe and funnel filling techniques for various liquids, from low-viscosity solvents to foaming and viscous substances, providing guidance on choosing the appropriate method.
Accurate and reproducible filling of the measuring cell is essential for achieving reliable results in digital density measurement.
Compact DMA density meters support multiple filling methods to accommodate different sample properties and workflows:
- Syringe filling: The sample is drawn into a syringe and then dispensed into the measuring cell.
- Funnel filling: The sample is simply poured into the funnel, and the measuring cell is filled by gravity.
- Peristaltic pump filling: Samples are automatically filled from a sample vial into the measuring cell.
- Aerosol adapter filling: Used to introduce volatile liquids from aerosol cans into the measuring cell.
This report focuses on the two manual filling techniques – funnel and syringe filling – to help users choose the appropriate method. Nine different samples, ranging from low-viscosity solvents to foaming liquids and viscous substances, were analyzed.
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