Waterproof Breathable Fabrics
Typical dimensions of water particles
|
Particle
|
Size (diameter)
|
|
Water vapour particles
|
0.0003µm
|
|
Droplets of fog
|
100µm
|
|
Drizzle
|
500µm
|
|
Rain
|
2000µm
|
|
Heavy rain
|
3000µm
|
N.B. Water repellent fabrics must have a water resistance greater than 130 hPa.
 |
5/16 |
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