3 doctors weighed in:

I just bought a new israeli 4a1 nbc gas mask and I was wondering I could use the filter after its expired?

3 doctors weighed in
Dr. Robert Stuart
Family Medicine
2 doctors agree

In brief: Yes

Depending on what you are hoping to use it for, it will work for a while but you can't depend on it to work against biological warfare or nerve gases after it has expired.

In brief: Yes

Depending on what you are hoping to use it for, it will work for a while but you can't depend on it to work against biological warfare or nerve gases after it has expired.
Dr. Robert Stuart
Dr. Robert Stuart
Thank
Get help from a real doctor now
Dr. Jack Hinkle
Board Certified, Family Medicine
384K people helped
Continue
108,000 doctors available
Read more answers from doctors