PMSSteriTest® Helix PCD Test Packs include ready-to-use Process Challenge Devices (PCDs) designed for pre-vacuum (“Class B”) steam sterilizers to ensure effective air removal and steam penetration into hollow medical instruments. Each pack contains self-adhesive test strips housed within a narrow, spiral tube that simulates challenging lumens; the strip clearly changes from pink to dark upon successful sterilization, providing instant and reliable visual feedback as specified by EN 13060 / EN 867‑5 and ISO 11140‑1/6. Ideal for daily quality control in hospitals, clinics, and CSSDs, these non-toxic, water-based indicators are also available in EO and H₂O₂ versions, supporting traceable sterilization records for up to 250 cycles