Sample preparation procedure
Take a sample from the fuel tank into a clean container. Allow the sample to "settle" and any water to accumulate at the bottom of the sampling container.
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NOTE: When possible, test the water phase of the sample taken from the fuel tank. Testing the water phase will provide more accurate results than testing the fuel stage.
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Testing Procedure
1. Unscrew and remove the top from the Fuelstat™ resinae Sample Extraction "Buffer" bottle.
• If there is 5ml of water in the sample, then add the water to the bottle, up to the "Water Phase" line.
• If there is less than 5ml of water in the sample, then add all the water, plus the fuel from the sample, to the bottle up to the "Fuel Phase" line.
2. Replace the top and shake the bottle for 5 seconds.
3. Invert the bottle and allow the blue solution to settle completely into the dropper.
4. Remove the Test Paddle from the foil pouch.
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NOTE: Do not touch the viewing windows on the test paddle. Touching the viewing windows can contaminate the test paddle.
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Inspect both viewing windows. There should be a faint blue line opposite the Control Line mark (C). This is used in the production process to line up the device correctly. It has no actual function in the test and will disappear when the sample moves up the wick. If any other visible lines show in a viewing window, then the paddle is contaminated (refer to "Unused Lateral Flow Device (LFD))".
5. Write the aircraft number, tank number aircraft cycles and hours onto the test paddle.
6. Remove the cap from the top of the Fuelstat™ resinae Sample Extraction Buffer bottle.
• Discard the first two drops from the bottle.
• Place 4 drops of the blue extraction liquid in each sample well. (The sample well will turn blue).
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NOTE: The blue extraction liquid, NOT the fuel or water sample, must be placed in the sample well.
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7. Keep the test paddle flat for at least 30 seconds.
8. Wait for 10 minutes.
• Make sure the 2 Control Lines show after 10 minutes.
• If the Control Lines do not show, then the test is not valid.
Read within 30 minutes
