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A density in the range

Offer type: salePublished: 28.02.2015
Company:FLP Svetoshov D. E.
Seller:Svetoshov Dmitrij Evgen'evich
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Address:Ukraine, Zaporiz'ka Oblast', Zaporizhia

Hydrometer - an instrument for measuring the density of fluids, principle of operation is based on the Law of Archimedes. It is believed that the hydrometer was invented Hypatia.

Is usually a glass tube, the lower part of which calibration is filled with shot or mercury to achieve the necessary mass. In the upper, narrow part is a scale which is calibrated in values of protostrator or concentration of the solute. The density of the solution is equal to the ratio of the mass of the hydrometer to the extent to which he is immersed in the liquid. Accordingly, there are hydrometers constant volume and constant mass density.