49
EN
3
> 1-3 mg/m³
Hygienically noteworthy.
Only limited use in spaces
that are regularly used is
acceptable (< 12 months).
4
> 3-10 mg/m³
Hygienically dubious.
Only limited use in spaces
that are regularly used is
acceptable (< 1 month).
5
> 10 mg/m³
Hygienically unacceptable.
Avoid use of this space
as much as possible. Use
of the space should be
limited to at most hourly
intervals/temporarily a
day. You must refrain from
using the space if values
exceed 25 mg/m³.