Patent ID: 8535945

Claim:
A method for concentrating a sample, the method comprising: providing a first container adapted to contain a sample, the first container comprising a first portion and a second portion adapted to be removably coupled to the first portion, the second portion having an open end and a closed end, the closed end comprising a microstructured surface, wherein the microstructured surface comprises a plurality of recesses, each recess including a base and opening toward the open end of the second portion; centrifuging the first container in a first orientation toward the second portion of the first container; retaining a concentrate of the sample in the microstructured surface of the second portion of the first container; removing the second portion of the first container from the first portion; coupling the second portion to a third portion to form a second container; and centrifuging the second container in a second orientation toward the third portion of the second container, such that the concentrate retained in the microstructured surface of the second portion is moved into the third portion of the second container, the second orientation being different from the first orientation.