This EO (Ethylene Oxide) sterilization indicator is manufactured from high-quality medical-grade paper board and ink, ensuring clear and reliable performance. The indicator strip changes color from red to blue when exposed to specific EO gas conditions—accurate temperature, concentration, and time—indicating successful sterilization. Each package includes 200 pieces, packed in a PE bag and boxed for safe storage. For best results, store the product in a cool, dry place (15°C–30°C, 50% humidity), away from light and corrosive gases. This indicator is a practical and essential tool for verifying EO sterilization cycles in clinics, hospitals, and laboratories.