Electrostatic testing is a technical means that employs professional equipment and methods to measure electrostatic parameters of objects (electric charge quantity, voltage, decay rate, etc.), assess electrostatic risks and ensure the safety of products or environments.

Its core test types fall into three categories:

• First, electrostatic parameter testing of objects, measuring electrostatic voltage (contact / non-contact type), surface resistance and volume resistance;

• Second, testing of electrostatic protective materials. For anti-static garments, conductive flooring and other materials, resistance value, static decay time and surface charge density are measured;

• Third, electrostatic discharge (ESD) immunity testing, which simulates the impact of electrostatic discharge on electronic equipment to judge whether equipment malfunctions.

Three types of testing equipment are commonly used:

• Electrostatic voltmeter (available in contact and non-contact types; non-contact type is suitable for precision products)

• Surface resistance tester (measures the resistance between two points on material surface to judge anti-static / conductive performance, applied for testing workshop flooring and packaging materials)

• Electrostatic discharge generator (ESD gun), simulating discharge from human bodies or equipment to verify the anti-static capability of electronic equipment.

Application scenarios are concentrated in electrostatic-sensitive industries:

• The electronics manufacturing industry tests the anti-static capacity of chips, circuit boards and other components to prevent damage during production and transportation;

• The chemical / pharmaceutical industry detects electrostatic accumulation of flammable and explosive materials to avoid fire and explosion hazards;

• The textile / printing industry measures electrostatic parameters of fabrics and paper to solve adhesion and dust absorption problems.