The McKesson STER-ALL Performance Sterilization Biological Indicator Vial Steam serves as a reliable and accurate tool for monitoring steam sterilization effectiveness. Containing Geobacillus stearothermophilus spores, it changes color from purple to yellow to indicate successful sterilization. Complying with industry standards (ISO 11138 and ANSI AAMI ST79), the vial is easy to use and provides rapid results within 24 hours of incubation. It ensures patient safety by verifying the sterility of medical instruments and supplies, protects equipment from microorganism damage, and promotes operational efficiency. By demonstrating adherence to sterilization standards, it supports quality management systems and enhances regulatory compliance. Applications include hospital central sterile processing departments, dental and surgical clinics, laboratories, and pharmaceutical manufacturing facilities, providing peace of mind and assurance of sterile medical equipment.