Disinfectant efficacy test

A study proving that a disinfectant, at its in-use concentration and contact time, reduces relevant organisms on representative surfaces. It usually combines suspension tests, surface (coupon) tests on materials such as stainless steel, glass and vinyl, and in-situ EM comparisons. The challenge panel includes standard strains and in-house isolates, with at least one spore-former and one mould. Typical targets are 3-log reduction for vegetative bacteria and 2-log for spores.