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What is density?

Density is the mass of a sample or body divided by its volume.

D = mass/volume (g/cm3, or kg/m3, or lb/ft3)

What is the difference between manual and digital density measurement?

Manual measurements with a hydrometer or pycnometer are operator-dependent and therefore can lead to error-prone results. Digital density meters use the oscillation of a U-shaped glass tube (U-tube) filled with the sample to determine the density with very high accuracy (up to 0.000005 g/cm3) and repeatability (up to 0.000001 g/cm3). In addition, benchtop density meters have built-in Peltier temperature control, allowing temperature measuring ranges from up to 0 to 90 °C.

How to improve the workflow of density analysis?

Automate the sampling, draining, rinsing, and drying in your workflow, to save operators time and increase repeatability and reliability. Use sample changers to run series of samples unattended. In addition, barcode readers and PC software open the way to digital data management up to seamless integration into your LIMS, ERP or SAP.

Can other analyses be run automatically together with density?

Yes. Often the refractive index is measured together with the density. This can be run simultaneously with a multiparameter system, combining a density meter and a refractometer (and an autosampler for further automation). Further analysis of pH, conductivity, and color can be performed by adding corresponding instruments to the multiparameter system.