What building regulations exist with regard to the permissible level of indoor nitrogen dioxide?

Build_Regs_Advisors 15 February 2013 13:11 2

The levels of indoor nitrogen oxide must not exceed the following:

	288ð®g/m3 (150 ppb) – 1 hour average

	l 40ð®g/m3 (20 ppb) – long-term average

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