It is recommended that CIDEX OPA Solution be tested before each usage with the CIDEX OPA Solution test strips in order to guard against dilution, which may lower the ortho-phthalaldehyde level of the solution below its MEC of 0.3%.
60 strips x 2 bottles/case (120 strips total).
J&J Cidex OPA Test Strips Instructions for Use J&J Cidex OPA Disinfectant MSDS