EN343

Protection against rain.
Resistance to water penetration and water vapour resistance are the two main properties in the EN 343 test.
The following parameters are used:

Resistance to water penetration (3 levels)
Resistance to water penetration is the most important quality for an adequate protection. The resistance to water penetration is expressed in kPa but a more understandable expression is in millimeter water column.

Water vapour resistance - Breathing properties (3 levels)
The classic and easy to understand unity for breathability was defined in g/m 2  per 24 hours. However EN 343 uses a water vapour resistance value Ret (m 2 . Pa/W), which is measured by the 'so-called' skin model test ISO 11092.