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 25mg/m³.
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