Comply with AORN Guidelines for Comprehensive Weekly Testing with ProFormance(tm) Washer Test Kits. New guidelines from AORN call for weekly testing of the automated instrument washer. Healthmark's Weekly Washer Test Kits are the comprehensive solution. These kits include tests to measure water temperature, water quality, cleaning efficiency and directly test residual soil left on instruments, all parameters cited by the AORN as crucial for the routine testing of instrument reprocessing.