SDC Humidity Control Fabric ISO 105 B02, 1 Pattern 25x15cm per pack
This is an azoic dyed cotton fabric with specified fading properties, which varies with the amount of relative humidity.
It is used as a calibration tool for lightfastness testing. When the humidity of the lightfastness testing machine is correctly set it will fade at an identical rate to the light fastness standard Number 5. It is supplied with a printed instruction sheet for its use to determine the correct settings for the relevant ISO 105 B series test method.