When two materials are rubbed together, the electrical charges change. These charges remain momentarily on the surface of the bodies (from a few seconds to several months depending on the materials and environmental conditions). They form what is known as static electricity, which is generally present in small quantities. The more insulating a body is, the more charges it accumulates.

Measurement is essential in order to quantify these charges and determine the points of generation.

Elcowa has developed several processes to measure electrostatic charges: