This European Standard was approved by CEN on 1994-12-
05. Amendment A1 was approverl by CEN on 2000-08-07, Amendment A2:2001 was approved CEN on 2001-06-29. 24 р. The European Standard EN 172:1994 + A1:2000 + A2:2001 has status of the Standard of Republic Serbia. 24 p. Тhis European Standard specifies the scale numbers, transmittances and related requirements for sunglare filters for industrial use. Other valid requirements for these types of filters are specified in prEN 166