Systems and methods for detecting the presence of a selected volume of material in a sample processing device

A method for processing sample processing devices, the method comprising:

• providing a sample processing device comprising a detection chamber;
• rotating the sample processing device about an axis of rotation;
• and
• optically interrogating the detection chamber for an optical property of a material to determine whether the material is present in the detection chamber, wherein optically interrogating occurs while rotating the sample processing device.

A method for processing sample processing devices, the method comprising:

• providing a sample processing device comprising a processing array, the processing array comprising:
• an input chamber,
• a detection chamber, and
• a channel positioned to fluidly couple the input chamber and the detection chamber;
• positioning a sample in the input chamber of the processing array of the sample processing device;
• rotating the sample processing device about an axis of rotation to move the sample to the detection chamber;
• after rotating the sample processing device to move the sample to the detection chamber, optically interrogating the detection chamber for an optical property of the sample to determine whether the sample has moved to the detection chamber;
• and
• rotating the sample processing device while optically interrogating the detection chamber.