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Emcee - Diesel Exhaust Fluid (DEF) in Fuel System Icing Inhibitor (FSII) Test System
The aviation industry has recently encountered the problem of DEF (diesel exhaust fluid) contamination in FSII (fuel system icing inhibitor). Therefore, a need exists to determine if FSII is free of DEF prior to addition of FSII to aviation fuel.
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Scope
This test covers the detection of DEF in FSII in a range of 2-100 %.
Procedure
- Using the supplied pipette, dispense approximately 2 mL of FSII sample into the supplied clear vial.
- Empty the contents of the supplied reagent capsule (approximately 1⁄2 g) into the vial. Caution-it is important that you follow the order of step 1 and 2.
- Place stopper lid on vial.
- Shake vial vigorously for approximately 30 seconds. Contents should have a uniform consistency.
- If an immediate blue color change is observed, this is a positive indicator of DEF contamination in the range of 10-100 %.
- If there is no immediate blue color change, place vial on a level surface and allow to sit for approximately 5 minutes.
- Observe the reagent settling reaction in the vial as follows:
- Uniform white cloudy- indicative of no DEF contamination.
- Clear sample on top portion of vial with slight blue color change-indicative of DEF contamination in the range of 2-10 %.
Significance and Use
The above procedure provides a rapid, visible test to ascertain significant DEF contamination (2- 100%) of FSII. DEF and FSII are both clear and appear similar to water. There is no other known test to determine if they have been mixed.