Standard(s): 

ASTM D 4308

Product group(s): Fuel

User group(s): Fuel, Jet

Scope:

This method to applies to the determination of the "rest" electrical conductivity of aviation fuels and other similar low-conductivity hydrocarbon liquids in the range from 0.1 to 2000 pS/m
(1 picoSiemens per meter equals 1 Conductivity Unit cu).

"Rest" conductivity is the reciprocal of the resistance of unchanged fluid in the absence of ionic depletion or polarization (electrical conductivity at the initial instant of current measurement after a DC voltage is impressed between electrodes). Limited by the viscosity of the fluid and the conductivity level to be measured.

A specific sample volume is introduced between the two concentric electrodes in the conductivity cell. The resultant peak current will be transformed and digitally displayed as picoSiemens/meter.