Certified for use with steam, chemical vapor, EtO and dry heat sterilizers. Test results are documented after 24 hours incubation for steam users, 72 hours for Chemical Vapor users and 7 days for Dry Heat and EO Gas users. Test reports are sent on a quarterly basis, though access to spore test results are available any time at www.checkyourtest.com. Includes a toll-free help line service. Postage is required.