Centrifugal filling of sample processing devices

A sample processing assembly comprising:

• a sample processing device comprising first and second opposing ends and a plurality of unvented process arrays, wherein each unvented process array comprises a loading chamber located proximate the first end, a main conduit extending towards the second end, and a plurality of process chambers distributed along the main conduit, wherein the main conduit is in fluid communication with the loading chamber and the plurality of process chambers;
• and
• a carrier attached to a first major side of the sample processing device, the carrier comprising a carrier body spaced from at least a portion of the first major side of the sample processing device, and the carrier further comprising a rail aligned with each of the main conduits on the sample processing device, wherein the carrier body is spaced from the sample processing device between adjacent main conduits.

The assembly of clam 10, wherein the carrier comprises a plurality of carrier openings, the plurality of carrier openings aligned with the plurality of process chambers in the sample processing device.