This Performance Qualification (PQ) Kit provides a rapid and convenient method for verifying the performance of the MESO QuickPlex SQ 120MM, MESO QuickPlex SQ 120, MESO SECTOR S 600MM, MESO SECTOR S 600, SECTOR Imager 6000, and SECTOR Imager 2400 instruments. The qualification procedure measures consistency of signals across a plate read and dark (electronic) noise of the instrument. The entire PQ test should take approximately 15 to 30 minutes.