couldn't remember what SA meant on this NFPA diamond on the side of a Subway. so of course my mind went "ah yes. Sandwich hazard"

@qualia I'm pretty sure this just means they've got a CO2 canister in there

@qualia actually, CO2 has a 2 in blue, so either they DON'T have a CO2 canister in there or that diamond is wrong

@vikxin that's weird, i see anything from 1 to 3 for CO2. cant trust google anymore

@qualia I'm seeing a 3 for LN2 which tells me that the cryogenic nature of LN2 plays into the value. Gaseous N2 is 0 haha

@qualia I also saw something with a 1 for argon which is so obviously wrong I don't know how they could make that mistake

@vikxin none of these criteria make any fuckin sense to me

@qualia 4 4 4 OX or get out

@vikxin the work-neighbor is an analytical laboratory with 4/4/4/W, probably atleast partially as a cover-our-ass measure

@qualia I found a list of element values that has a helium as 1 0 0 (should be 0 0 0 SA) and cesium without the W so wow these lists are so wrong

@qualia An actual Airgas product listing also lists helium as 1 0 0...??? I guess because it's compressed. I guess it's not SA because it's lighter than oxygen and thus won't easily displace it.

@vikxin
@qualia it's a suffocation hazard, and a worse one than nitrogen gas

But I guess health is more about direct damage or toxic effects

@vikxin
Oh wait that is what the SA thing is for
@qualia

@charlotte @qualia yes, that's what SA is for--simple asphyxiant