Respirators

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I think I know the answer to this but I'll ask anyway, just in case!

I have a 3M 4255 respirator that is about 3 years old and has just been sat on a shelf during this period. Is this still good/safe to use if applying a nitro finish? 

Sarge

If you can smell anything through the filter while wearing it, no. 

Corvus

Please don't hold me to this for your own safety but I thought activated carbon filters lasted till they were basically clogged. Like the ones in my airfed setup specify life in hours of use, not in time. You could search for a data sheet from 3M though, they might specify shelf life or something of the sort.

Andyjr1515

There should be a use-by-date inkjetted onto the cartridges.  It's usually quite a long time...

Andyjr1515

Andyjr1515 said:

There should be a use-by-date inkjetted onto the cartridges.  It's usually quite a long time...

Correction - there's probably a 'Made on' date and that refers you back to the Datasheet as @Corvus ; says 

Andyjr1515

Andyjr1515 said:

Andyjr1515 said:

There should be a use-by-date inkjetted onto the cartridges.  It's usually quite a long time...

Correction - there's probably a 'Made on' date and that refers you back to the Datasheet as @Corvus ; says 

Correction correction - the datasheet does refer to a Use-by-date so there should be one printed on it:

http://multimedia.3m.com/mws/media/681573O/gb-eur-4000-half-mask-tds.pdf

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Andyjr1515 said:

Andyjr1515 said:

There should be a use-by-date inkjetted onto the cartridges.  It's usually quite a long time...

Correction - there's probably a 'Made on' date and that refers you back to the Datasheet as @Corvus ; says 

I can't seem to find a use-by date on the respirator. Need to get my glasses on!