No practicable substitutes for lead in the plating layer of high voltage diodes on the basis of a zinc borate glass body are available.

This seal is normally made by holding the torch flame stationary, blowing out a hole in the main glass body to match a second tube (hose connection in this example).

Along the glass body, two strips with the logo chase one another, by creating a visual effect of great impact and characterizing the bottle with the unique style of Canti.