Fig. 4
From: Cloth face mask fit and function for children part two: Material Selection
Experimental face masks evaluated via Head Form mode. A Differential pressure for unsealed and sealed masks. Results are benchmarked against flat textile air permeability and the range of pressure drops measured on the simulated breathing apparatus with no mask. B Moisture content (MC) and salt content (SC) percent by mass of fabric for unsealed and sealed masks. C Moisture capture (MC) and salt capture (SC) percent by mass of total generated moisture and salt, respectively, for unsealed and sealed masks