Field test method for the easurement of filter efficiency (NT TR 531)
Report #: NT TR 531 Approved: October 2002 Author(s): Matti Lehtimäki, Aimo Taipale Size: 922.79 KB Abstract Ventilation filters are normally classified with the Read more…
Nordic cooperation – Removing barriers – Approved once accepted everywhere
Report #: NT TR 531 Approved: October 2002 Author(s): Matti Lehtimäki, Aimo Taipale Size: 922.79 KB Abstract Ventilation filters are normally classified with the Read more…
Report #: NT VVS 109 Approved: November 1996 Size: 62.04 KB Abstract The aim of this method is to measure the filter efficiency and Read more…