Representative Sample

Definition - What does Representative Sample mean?

Representative Sample is a statistical sample that is used to analyze and reflect the quality of the oil in a lubrication program. It enables an individual to be sure of the quality of the lubricant oil used in the machines and also analyze the performance of machine and oil in its current state. In order to analyze the quality of the lubricating oil, representative oil sample has to be obtained.

Petropedia explains Representative Sample

In any effective oil analysis program, proper oil sampling plays a critical role. This oil sampling is known as representative sampling or representative oil sampling. Without representative sample, oil analysis endeavors are futile. While obtaining representative oil sample, two primary goals have to be met. They are:

  • Maximize the data density
  • Minimize the data disturbance

In order to maximize the oil data density, representative sample should be taken in such a way that the information per milliliter of oil should be as much as possible. By information per milliliter of oil, the dryness of oil, cleanliness of oil, depletion of additives and wear and tear particles of machine should be present in a milliliter of lubricating oil sample.

Now in order to minimize the data disturbance, the above information should be uniform, representative and consistent. Avoid any contamination of foreign particles.

To maintain the two primary goals of representative sample, the proper sampling procedures, device and location need to be considered.

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