22 April 2009 // Tag :
How to measure impermeability?
In order to measure the impermeability of a fabric, we place this fabric under a tube (column) filled of water, and we look from which height of water the first drops pass through the fabric. The EXTREME R-LIGHT has a value of 10,000 Schmerber, that is 10,000mm, 10m of water! Much more all the conditions, even extreme, as you will meet!
ALPEX membrane (made and created in Europe)
Up-market membrane selected by RAIDLIGHT for its unique characteristics:

Impermeability and wind-stopper : 10.000 schmerbers ;

Breathability : RET < 5 ;

Déperlant treatment.
Compare the performances!