The determination of melting point can be done using the capillary tube method. ... A small capillary tube is filled with a small amount of the chemical component. The capillary is then heated in a chemical bath along with the thermometer to observe the point of melting of the solid component.Electrically heated apparatus is used to measure the melting point of a solid that melts above 100 degrees Celsius. This apparatus can also be used for even higher melting points.