This gives a soil sample of known total volume, .
Capacity is a term that refers to a measuring vessel or a container of known volume.
Water content can be directly measured using a known volume of the material, and a drying oven.
Dividing the mass on the known volume of the tube gives us the density of the fluid.
If you carefully weigh a known volume of the liquid without the sugar (you will know its density).
Manual samplers draw a known volume of air through a filter.
By counting the cells in a known volume of culture the concentration can be mediated.
The calorimeter is immersed in a known volume of water.
The powder is placed inside of known volume, and weighed.
Two marks (one above and one below the upper bulb) indicate a known volume.