Wilhelm  Jost  Institut Förderverein e.V.

Conductivity (electrical)



The electrical conductivity is a measure for the electrostatic rechargeableness of liquids and is usually indicated in the unit pS/m.

(1 pS = 1 pico Siemens = 10-12 Ohm-1).

Testing Method:


 according to BG Chemie R 003 6/2000

  • DIN 51412-1        for liquids of small electrical conductivity
  • DIN EN 27 888    for liquids of high electrical conductivity


Safety-relevant meaning:


Dangerously electrostatically to load can itself:


  • Liquids, whose electrical conductivity is below 50 pSm-1,
  • liquids, whose electrical conductivity is below 1000 pSm-1, with unresolved, solid or liquid portions.


Partly the separation of materials by mechanical Separation or mechanical treatment can be accompanied by an electrostatic loading of the same.

This can jump over also by influence on neighbouring articles or persons.


In a combustible atmosphere an electrostatic unloading can work as ignition source for an explosion.