The ReTHINK Reusable Type 1 Mask Filter is the best reusable alternative to the traditional single-use medical mask. It has been designed to meet the filtration performance, differential pressure and microbial cleanliness requirements for a Type 1 Medical Face Mask as set out in SANS 1866-1 and European Standard EN14683. When the nanofiber filter is used in combination with a compatible cloth mask, it is intended to effectively function as a medical device-grade Type 1 Medical Mask.
However, a few key characteristics about these masks clearly distinguish them from the rest, as they ensure superior performance and increased benefits to all who use them. Their performance characteristics are tested according to a set of standardized test methods (ASTM F2100, EN 14683, or equivalent) that aim to balance high filtration, adequate breathability and optionally, fluid penetration resistance.