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Undisturbed penetration is defined as the penetration at 25°C (77°F) of a sample of grease in its container with no disturbance. Typical uses of the undisturbed penetration are: (1) to control the consistency of certain greases during manufacture, and (2) to assess the degree to which a grease develops a false body or set upon prolonged storage. The use of undisturbed penetration as a quality control test does not involve the transfer of grease samples from one container to another prior to testing. However, in evaluating the effect of prolonged storage upon a lubricating grease, samples may be repackaged prior to storage in an appropriately sized container. Parties interested in measuring the undisturbed penetration on grease samples should use the general procedure in accordance with 11.1, 11.1.1, and 11.1.2 and establish mutually agreeable conditions for storage and container size.