PMSSteriTest® Class 5 ETO Chemical Integrator Strips are precision-engineered, two-level Type 5 indicators compliant with ISO 11140‑1:2014, ideal for verifying ethylene oxide sterilization. Each strip starts with a Level 1 red ink, signaling basic exposure, then advances to Level 2 purple/brown, and finally transitions to green once the full bioburden kill time (equivalent to 10⁶ Bacillus atrophaeus spores) is achieved — offering clear, immediate validation of sterilization safety. Laminated for durability and free from toxic heavy metals, these robust indicators function reliably in pouches, trays, containers, or wrapped loads. Supplied in convenient boxes of 250, they’re ideal for hospitals, clinics, and sterilization facilities requiring precise, record-ready assurance of ETO cycle effectiveness.