Cidex OPA Solution, Glutaraldehyde-free, 1 Gallon. 0.55%) ortho-phthaladehyde solution, effective at room temperature and has excellent tuberculocidal and high level disinfection capabilities. A fast and effective way to disinfect a wide range of instruments and endoscopes. High level disinfection in 12 minutes. Low odor. Easily rinses from equipment, especially lumened devices. Requires no activation or mixing. One gallon bottle