How to tell when a respirator filter is going to stop working

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Published on November 26, 2017 5:00:00 PM ● Video Link: https://www.youtube.com/watch?v=2L8KgrVTPH0

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How to tell when a gas mask or respirator filter is going to stop working/expire while in use.
If a filter stops working in use it could have very serious consequences for the wearer. There are two ways a filter can stop working while in use.
Firstly the particulate filter could become clogged with particles such as dust or sand or chemical powder, when this happens the wearer will find it hard to breathe through the filter due to the filter paper being clogged up.
Secondly the activated carbon layer could be saturated and not able to adsorb anymore chemical vapour, at this stage the wearer will begin to smell odours from outside the mask, the filter must be changed immediately as dangerous chemical vapours will now be getting past the filter.
Thanks to Iain for the video idea, although other people have mentioned it a few times as well.

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