Category Archives: OPA

OPA (Ortho-Phthalaldehyde) is a quick and effective high-level disinfectant used on a wide variety of semi-critical, heat-sensitive medical devices in medical facilities all over the world. OPA is very effective against a wide range of microorganisms and has a near neutral pH level. The CDC website compares characteristics of selected chemicals (including OPA) used as […]

Posted in OPA

Ortho-phthalaldehyde (OPA) received clearance by FDA in October 1999. OPA solution is a clear, pale-blue liquid (pH, 7.5), which typically contains 0.55% OPA. OPA has demonstrated excellent microbiocidal activity in in vitro studies[2,3]. For example, it has shown superior mycobactericidal activity (5-log10 reduction in 5 minutes) compared with glutaraldehyde. The mean time required to effect […]