What is M1 classification?
M1 is an emission class for building materials. M1-certified materials emit extremely low levels of compounds into the room space.
The criteria for M1-certified building material was developed and published for the first time in 1996. M1-classification sets limit values for the emission of VOC (volatile organic compound), formaldehyde, and ammonia. Also, M1 defines the acceptability of the odour associated with the material is assessed.
The aim of the classification is to enhance the development and use of low-emission building materials and furniture.