If the sample is too large to fit into the vacuum container, what should be done?

• A. Run in portions
• B. Recrush to smaller size
• C. Discard the sample
• D. Use a larger container

Answer: (A)

When a sample is too large for the vacuum container, the proper approach is to divide it into portions that will fit and test those portions separately, then combine the results as appropriate. This keeps the testing process practical and ensures the sample remains representative; testing smaller portions allows proper evacuation, accurate measurement, and consistent results.

Splitting the sample avoids forcing a large piece into a container that can’t accommodate it, which could lead to incomplete evacuation or uneven results. If you were to crush or reconstruct the sample or discard it, you’d risk altering its properties or wasting material. Using a larger container isn’t always possible in the workflow, and splitting into portions fits the standard procedure.

So, run in portions and analyze each part, then account for the total by weighing or combining results as specified by the testing method.