ISO 16603:2004 is a laboratory test method that specifies procedures for measuring the resistance of materials used in protective clothing, such as medical gowns, to penetration by synthetic blood. The test involves using an ISO 13994 test apparatus to assess the ability of a material to protect against blood-borne pathogens and other body fluids.

The benefits of ISO 16603:2004 certification are that it provides a standard and reliable method for evaluating the performance of protective clothing materials against blood and other body fluids. This helps to ensure the safety of healthcare workers and others who may be exposed to such fluids. By complying with this standard, manufacturers of protective clothing can demonstrate the effectiveness of their products and provide assurance to end-users that their products meet the necessary safety requirements. Additionally, compliance with this standard can help to reduce the risk of infection and illness, which can lead to improved healthcare outcomes and reduced healthcare costs.