ConFirm Mail-In Premium - 12 Packets (3 Strip Test). Postage Paid. 12 Test Packets, Each Packet Contains: 3 Strips (2 Test Strips & 1 Control Strip). Biological Monitoring Service for All Sterilizers. Compatible with steam, EtO, chemical vapor and dry heat sterilizers. Results in 24 hours for steam, 72 hours for chemical vapor and 7 days for dry heat and EtO from start of incubation period at processing laboratory. Results available online 24/7 on our secure, confidential website. Package of 12 tests (3 strip test)