A suitable sample splitter is capable of obtaining ____ portions of the sample without appreciable loss of ____.

A suitable sample splitter is designed to obtain representative portions of a sample without appreciable loss of fines. In aggregate testing, it is crucial to have a sample that accurately reflects the entire batch of material being tested, particularly because aggregates can exhibit variability in composition.

The term "representative" is key here; it indicates that the sample taken must accurately reflect the characteristics of the whole batch, including its composition and particle size distribution. "Fines" refers to the small particles that may affect the properties of the aggregate; losing these particles during sampling can lead to incorrect test results. Therefore, the ability of the splitter to minimize loss of fines ensures that all components of the sample are retained, providing a more accurate basis for testing.

Other options do not align with the requirements for sampling in aggregate testing. For instance, "equal" portions do not guarantee that the sample is representative, and "moisture" loss is insignificant regarding the splitter's purpose. Furthermore, "random" sampling does not pertain to the integrity of fines, which are critical in material assessment.