Respirator Filters

[wptski]

My original assumption was that it's level of hazard. But looking at the list again, they mention that they are in groups based on how you can measure exposure in a lab. So exposure to everything in group A can be checked for in one test, etc.

Ah, like a spectrum analysis?

I just remembered that I have this VOC Monitor so I'll have to try it out on the next coat of poly.

 

[atomicmike]

My original assumption was that it's level of hazard. But looking at the list again, they mention that they are in groups based on how you can measure exposure in a lab. So exposure to everything in group A can be checked for in one test, etc.

Ah, like a spectrum analysis?

I just remembered that I have this VOC Monitor so I'll have to try it out on the next coat of poly.

Yeah, exactly. I'd assume they're either using something like mass spectrometry or HPLC (high-performance liquid chromatography). Or maybe both, depending on which group.

I'd be curious to see what the VOC monitor picks up with a water-borne poly. It looks like it should be sensitive to all of the three chemicals listed in the MSDS for the Minwax, but I don't actually know a whole lot about the sensor tech it's using.

 

[wptski]

The other time the battery died but on AC power today the monitor did read almost half way up the scale but no alarm.