When considering compatibility, it is important to think not just about the compatibility of PPE with other types of PPE, but also with other equipment and environmental influences. Incompatibility typically results in three main outputs: loss of protection, a reduction in comfort, or a reduction in the ease of doing the task / productivity.
We can think about compatibility with the following simplified model:
Having selected the right product to protect against the workplace hazard(s), it is vitally important that the PPE is correctly fitted, worn and maintained at all times when exposed to the hazard, to ensure the protection.
These are a selection of things that should be considered to form part of your management system and training when thinking about use and maintenance.