ProSure® Mailers are designed to provide third party verification that steam, chemical vapor, dry heat and EO gas sterilization processes are functioning properly. Use ProSure mailers weekly for sterilization monitoring or in conjunction with EZTestâ„¢ in-office monitoring system to validate in-office results.- ProSure Autoclave Spore Strip Monitoring System, 6 tests/bx (US Only) 14-21 Days