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Viscosity measuring system

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The DVS 1 from Lauda measures the dynamic viscosity and density of liquids from the damping of a vibrating bubble in a test sample. In contrast to rotation viscosimeters, this globally-unique method can measure viscosities smaller than 1 mPas as precisely as glutinous substances up to 1000 mPas. The high level of precision, the very gentle measuring technique (thanks to the small amplitudes), the small sample quantity of just a few millimetres, and very easy operation via a separate control panel make this device into a piece of all-round measuring equipment.

In conjunction with the Lauda RE 305 thermostats, the viscosities required for calculating the viscosity index at 40 and 100 °C and the change in density of the same very small sample quantity can be carried out in parallel. The special feature about this is that they can even be carried out on used, dirty motor oils in a short time. The sample is simply injected using a 2 ml disposable syringe and can be removed following the measuring process and perhaps be re-used. Rinsing is also via a disposable syringe using a suitable solvent. The success of the cleaning can be assessed and optimised via the observation window or via the viscosity value of the rinsing agent. By means of an integrated pump, the measuring cell can be dried.
cpp 412
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