Which of the following describes the procedure for the 'Shaker Test'?

The Shaker Test involves taking a glass cylinder that contains a mixture of water and fuel, then shaking it to observe how the two substances interact. This procedure is used primarily to determine if the fuel has any impurities or separation issues. By shaking the mixture, any contaminants or phase separations become evident, allowing the operator to assess the quality of the fuel.

The method effectively leverages the physical characteristics of the components involved, as fuel is generally less dense than water and may separate when impurities are present. Observations made during this test can inform the user about the fuel's suitability for use in small engines, ensuring that only clean and appropriate fuel is utilized.

Other options do not accurately reflect the process involved in the Shaker Test. For instance, simply adding fuel to a bowl and waiting does not provide any insight into fuel quality. Measuring the temperature of the fuel over time focuses on the thermal properties rather than quality issues, and purifying the fuel through distillation involves a completely different set of processes aimed at separating components based on boiling points, rather than assessing a mixture's stability.