Richard Storey highlights the latest advances for scientists performing density testing
Most scientists know that accurate density determination is critical during research.Adam Equipment’s density kit combined with the Nimbus precision or analytical balance makes density determination easy, reliable and precise.
Traditionally, density determination involved measuring the sample material, figuring out the volume, weighing the sample, dividing the volume by the mass, and finally arriving at the density. This is not only time-consuming and complicated; it can also be inaccurate.
It’s possible to test both solids and liquids using the Adam density kit in tandem with the Nimbus. That means that even samples with densities greater or less than that of water can be determined. The balance’s software will calculate density using water, ethanol or paraffin as selectable references, and allows users to enter the density of any reference liquid directly.
The density kit is installed on the floor of the balance’s enclosed weighing chamber. The kit’s beaker holds the reference liquid, which may be reused to test as many samples as needed. The user simply selects the density application from the built-in menu options. If a reference liquid is used other than what is already programmed into the balance, the user can enter the density for that liquid. The balance provides prompts to guide users through the process. First, weigh the sample in air using the cup on top of the stand, and then weigh it in the reference liquid, using the cup suspended on the wire. The Nimbus’s software calculates the density automatically.
The density kit includes a glass beaker, a suspended weighing cradle to replace the standard pan, independent support for the beaker of fluid, thermometer with clip for suspension in the fluid, and glass sinker of known volume for density determination of fluids.
Easy to operate, the Nimbus offers numerous weighing units including a customisable unit, plus readabilities from 0.1mg to 0.1g and capacities from 80g to 22kg. Its solid metal construction provides excellent durability. USB and RS-232 interfaces facilitate data transfer, recording and traceability.
For more information at www.scientistlive.com/eurolab
Richard Storey is with Adam Equipment in Milton Keynes, UK.
