The efficacy of a disinfectant is tested in a disinfectant testing laboratory using standardized methods typically involving exposing contaminated surfaces to a known concentration of disinfectant for a specific contact time and measuring the reduction in the number of viable microorganisms.

The length of exposure or contact time, is critical because insufficient contact time may not effectively kill or inactivate all microorganisms on the surface, reducing the overall efficacy of the disinfectant.

The label on the product or the manufacturer’s instructions will indicate what pathogens the disinfectants will be effective against and the required contact time for effective disinfection.

Disinfectants are used to kill or inactivate microorganisms on inanimate surfaces, while antiseptics are applied to living tissue to inhibit microbial growth. In disinfectant testing, the focus is on evaluating the efficacy of products on inanimate objects, ensuring they meet safety and regulatory standards for environmental hygiene.

Disinfectants should be tested periodically, often annually or whenever there are changes in formulation, application procedures or regulations​.

Yes, disinfectant testing can be customized to meet specific application needs, including testing against particular microorganisms or under specific environmental conditions.

Disinfectant testing laboratories commonly test surface disinfectants, instrument disinfectants, textile disinfectants, hygienic handwashes and hand rubs​.

Key parameters evaluated during disinfectant testing include microbial reduction and testing conditions like contact time, concentration, temperature and the presence of organic matter.