A bureaucratic error in the implementation of EN ISO 16890 allows countries to withdraw EN 779 at short notice
The EN 779 test standard for air filters can be with-drawn at any time
A formulation error in the cover page of the new ISO 16890 international test standard for the assessment and classification of air filters has created uncertainty and different courses of action among different countries. Originally, the standard introduced at the beginning of 2017 was intended to…








