Dangerous when the ambient air contains less than 20.9% oxygen.
If possible, always use a filter that protects against the expected hazardous substance, because this specific filter has a much longer service life.
Only use an ABEK2-P3 filter if you are unsure about the hazardous substance, but this has a considerably shorter service life, up to 70% less!
Once a filter has been used for one type of gas or vapor,
even if the filter is not yet saturated, then the filter concerned may only be used for the same type of gas or vapour.
Don't take any risks, get a new breath filter.
According to: DIN 3181, EN141/143/148, CE
Threaded connection: DIN 3183-CI