Standard Test Method for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels
|Publication Date:||1 May 2011|
This test method covers a technique for measuring the concentration of Diethylene Glycol Monomethyl Ether (Di- EGME) in aviation fuels.Ameasured volume of fuel, extracted with a fixed ratio of water, is tested with a suitable refractometer to determine the concentration of fuel system icing inhibitor (FSII) in fuel. Precision estimates have been determined for the DiEGME additive using specific extraction ratios with a wide variety of fuel types. The extraction ratios are high enough that portable handheld refractometers can be used, but not so high as to sacrifice accuracy or linearity, or both, in the 0.01 to 0.25 vol % range of interest.
DiEGME is fully described in Specification D4171 and in other specifications.
The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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*A Summary of Changes section appears at the end of this standard.