How to Use a Density Bottle

Density bottles are mainly used to determine the density of liquids of moderate viscosity. They are not volumetric instruments, however, they are calibrated 'to contain' as in the case of volumetric flasks.

Handling

1. Determine the weight of the dry and empty density bottle.
2. Fill the density bottle with liquid, avoiding bubbles. The ground neck should be covered to about 1/3.
3. In a thermostatic bath, adjust the temperature of the bottle and contents to 20 °C.
4. Align the stopper respectively, the thermometer of the density bottle according to the marking, and insert carefully. The capillary tube fills up and the displaced liquid comes out.
5. Carefully dry the outer surfaces of the stopper (respectively, the side capillary) and the density bottle with tissue.
6. Determine the weight of the filled density bottle.