The conditions of use (temperature, concentration etc.) within the WD for all process chemicals (detergent, disinfectant etc.) shall be within the limits specified by the process chemical manufacturer.
Where required for testing purposes the WD manufacturer shall obtain also from the process chemical manufacturer the method(s) to be used to neutralize the process chemical (e. g. to stop any further antimicrobial activity) and shall make this information available to the user (see 4.4.2.3, NOTE).