5.2.5 Microbial cleanliness (Bioburden)When tested according to EN ISO 11737-1:2018 the bioburden of the medical mask shall be≤30 CFU/g tested (see Table 1].NOTEEN ISO 11737-1:2018 specifes requirements and provides guidance for the enumeration andmicrobial characterization of the population of viable microorganisms on or in a medical device, component, raw material or package.To determine the mask's bioburden according to EN ISO 11737-1:2018, refer to the procedure as described in Annex D.The number of masks that shall be tested is minimum 5 of the same batch/lot.Other test conditions as described in EN ISO 11737-1:2018 may be applied.In the test report indicate the total bioburden per individual mask and based on the mask weight, the total bioburden per gram.5.2.6 BiocompatibilityAccording to the definition and classification in EN ISO 10993-1:2009, a medical face mask is a surface device with limited contact. The manufacturer shall complete the evaluation of the medical face mask according to EN ISO 10993-1:2009 and determine the applicable toxicology testing regime. The results of testing should be documented according to the applicable parts of the EN ISO 10993 series. The test results shall be available upon request.5.2.7 Summary of performance requirementsTable 1 - - Performance requirements for medical face masks