Miscellaneous: Permeability of water, steam and gases, tests on medical safety masks, tests of explosiveness, oxidativeness and fire safety, oxygen index, etc

1) Permeability of porous materials by water, steam and gases

2) Medical masks safety tests (Image 1)

3) Explosivity, oxidativeness, ignitability and flammability of liquids and solids (Image 2)

4) Oxygen index (minimum oxygen content of air) of polymers and other flammable materials

5) Minimum ignition energy of dust in air (Image 3)

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