CASRIWater Detection Capsules can be used to indicate the presence offree water (suspended water) in jet fuels at handling temperature,which is simple, rapid and sensitive.

FuelTest is authorised and approved by the Civil AviationAdministration of China.
A 5ml sample is sucked through the detector head into thesyringe.
An initial indication occurs at about 10ppm when the capsule turnsfrom a pale yellow to a pale green colour. The colour deepens to adark green-blue, indicating a water content of 30ppm.

Usage:
Check the expiry date on the body of the tube to ensure thedetector has not passed its expiry date.
Take the capsule from the tube; check that the paper is pureyellow.
Do not touch the centre paper and use it immediately without longtime exposure at ambient humidity.
Note:
1) The tube should becovered immediately after the capsule is taken.
2) If there aregreenish-yellow spots or any other colours on the test paper, donot use it.
Fit capsule to syringe with plunger in the closed position, ensurethe capsule has been steadily fixed onto the syringe to avoid itfalling into the fuel sample.
Immerse the capsule to the lower part of the freshly drawn fuelsample of interest, stir and draw 5ml of the fuel sample. Alsoinstall Fuel Test into the chemical water detection port of theclosed circuit sampler and draw 5ml of fuel sample.
Withdraw the syringe and examine the colour of the centre portionto determine the content of suspended water immediately.
If the colour of the centre does not change, namely yellow oryellowish then the fuel sample is acceptable.
If the colour of the centre is yellowish-green (or yellowish-greenspots), the dispersed water content of the fuel sample is less than30 ppm.
The colour of the centre can change to green becoming progressivelymore noticeable with increasing water content. Drain and sample thefuel again and test.