When more than 1.25L of alcohol is used, what must be done to the final meter reading?

When more than 1.25L of alcohol is used, the final meter reading must be adjusted using a correction factor. This is because the volume of alcohol can significantly influence the measurement accuracy and precision of the meter readings.

The use of a correction factor accounts for variations that may occur due to the physical properties of the alcohol, such as its density and how it interacts with the measurement equipment. Without this adjustment, the final reading might not accurately reflect the true volume or concentration of alcohol used in the process, leading to potential errors in calculations and results.

In contrast, maintaining the reading as unchanged would ignore these important physical interactions. Reevaluating the reading might imply some form of comparison or validation, but without applying the necessary correction, this would not suffice for accurate assessment. Recording it as an error would also suggest a failure in the procedure that doesn't address how to handle the variance in measurement appropriately. Adjusting with a correction factor is the standard practice to ensure measurements are reliable and precise.