Exceptionally fast. Disinfects in 5 minutes at 25 °C and in 12 minutes at 20 °C in a legally marketed automated endoscope reprocessor (AER). ortho-Phthalaldehyde (OPA) High-Level Disinfectant - MetriCide OPA Plus Solution is a convenient, ready-to-use, high-level disinfectant that provides a broad spectrum of kill including Tuberculosis, Hepatitis A (AER), Hepatitis B, HIV-1, and Polio Virus Type 1. It can disinfect a wide range of endoscopes and other heat sensitive semi-critical medical devices. MetriCide OPA Plus Solution is ideal for both automated and manual instrument reprocessing and provides up to 40% more reprocessing cycles in an AER than the other OPA brand. It is designed for use in central processing, gastrointestinal departments, surgery centers, and other areas where high-level disinfection is required.