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(A) Schematic of the test equipment. The test equipment was prepared in accordance with ISO 18071, a guideline of the International Organization for Standardization: (1) light source (fluorescent lamp), (2) Petri dish (lid), (3) cover film, (4) virus suspension, (5) test film, (6) glass rod, (7) paper filter, and (8) Petri dish (bottom). (B) A photo of a moisture chamber with a test film. (C) A photo of the testing equipment.
