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Electrostatic Charges During Weighing

Electrostatically charged samples can cause handling difficulties and weighing measurement errors. The cause of this is a net charging of the weighing sample that, without additional measures, is not reduced or is reduced only slowly. If weighing vessels are charged, polar opposite charges on the metal surfaces of the weighing chamber are attracted to them. This attraction between the charged vessel to the weighing pan and the charges on the weighing chamber produce an additional force that the balance measures as supposed extra weight. Typically, under such influences, balances take a long time to stabilize, and the measurement is innacurate due to the additional disruptive force.

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