ConFirm Mail-In Value Test - 52 Packets (2 Strip Test). Postage Not Paid. 52 Test Packets, Each Packet Contains: 2 Strips (1 Test Strip & 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 52 tests (2 strip test)