Anti-Icing in Aviation Fuels
The prevention of fuel system icing in some aircraft depends on the presence of an anti-icing additive in the fuel.
The additive now commonly used is diethylene glycol monomethyl ether (DiEGME).
For complete protection, it is necessary for the quantity of DiEGME to exceed a certain minimum level when the fuel enters the aircraft.
It is therefore necessary to check the DiEGME content of the fuel at various points between the blending stage and the aircraft fuel tanks.