Final answer:
The AEL water analysis method does not specify the exact amount of fuel to pass through the test pad. A representative sample should be taken, and specific laboratory protocols for sample size should be followed if available.
Step-by-step explanation:
When obtaining a sample for the Aeronautical Engine Laboratory (AEL) water analysis method, the procedure does not specify an exact amount of fuel that should pass through the test pad. However, standard practices for fuel sample analysis typically involve collecting a representative sample that has passed through filtering systems or a coalescing pad. It's important to collect enough fuel to obtain accurate results, but not so much as to waste resources or risk contamination of the sample. If there are specific protocols outlined in your AEL test procedures, please follow those closely. In general laboratory practice, parameters like flow rate and volume are clearly specified in the experimental protocols, such as the flow rate in reverse phase HPLC, which is mentioned to be at 1 ml/min.