Borås Cotton flame retardant fabrics complies with one or more standards explained shortly below.
DIN 4102 is a German standard which measure the reaction to fire. If the curtain is approved as FR according to the standard it is marked with B1
NF P 902-503 is a French standard which is doing test according to an electrical heater. The result M1 is the highest in this standard and tells that the fabric will not continue burning.
EN 13773 is a European standard where the results class 1 gives the result no ignition.
BS 5867 is a standard from U.K. which is known for its cigarette test.
Many of Borås Cotton fabrics are printed with different colours and patterns. The fabrics should remain the same after certain time of use and washings. Colour fastness can be tested in different ways.
When doing the test according to standard ISO 105-B02:2014 Colour Fastness to artificial light the fabric is put in a chamber with specific temperature, humidity and time. The result will be compared with a standardized level between 1-8, where 8 is the best with no changes.
The standard ISO 105:C06:2010 Colour Fastness after washing the fabric is washed according to a standardized program with given temperature. The result is given within a level of 1-5, where 5 is the best with no changes in colour.
Acoustics – sound absortion
How is sound absorbtion measured?
Sound absorption is measured according to the standard ISO354:2003.
A test report from ISO354:2003 gives a result that can be compared between different qualities and helps the line of business to calculate the optimal design for the designated environment.
How is it tested?
The test is done in a specialized acoustics chamber where the background noise is very low. The fabric is mounted 10 cm away from the wall in one part of the room. The absorption is tested with the fabric stretched flat and pleated. The test measures the duration in seconds to reduce a 60dB sound wave in frequencies between 100 and 5000 Hz. The reverberation is measured thus resulting in absorption level. BORÅS COTTON tests its fabrics at Akustikverkstan; www.akustikverkstan.se
How to use the result?
Absorption levels are rated from A-E, where A is the best.
The rooms design is the most important when adding the different levels of sound absorption textiles. A level C rated textile can be sufficient in an approved level A room.