I don't recall ever holding up filler material used in wicks to this level of a standard before. I guess I want a comparitive to what others are using - and to other materials in order to understand which is worse / better.
To my knowledge, no one's been using this as a wicking material before. It's not considered safe. There's definitely been lots and lots of looking at the materials used for wicking but generally for commercial applications you've had:
1.Silica
As was mentioned before, this stuff will shred as it's braided but doesn't generally crumble. It isn't super light, so while it's possible for bits to break off if you are messing with it and possibly inhale, it'd be very rare and there's no known danger from when it's been studied. Motes of it won't be migrating around.
You inhale different types of dust and such every day, and your lungs and cillia deal with it so it's either absorbed and dealt with or moved out or coughed up. But there are types and sizes mentioned that are really problematic. A naturally ocurring example might be volcanic ash -- it's size and structure messes up your lungs in a big way, but walking around a dusty house doesn't unless you've got asthma. Same amounts, different outcome.
2. Poly-fil (cotton or polyester)
This was originally used in the old cartomizers, and has made a comeback in some of the new tanks, which are basically a gauze wrapped around a heating element. The polyester component is the negative one, but you're talking fumes here if burned. e.g., if you dry-burn it or run it with no juice, it very much *is* possible to burn it and then you're inhaling whiffs of petroleum.
3. Cotton
No amount of smoke particulates are great for you (even from cars) but this is in that minor league, like being around exhaust and only if you burn it. This is really only being included for completeness -- again, cotton fibers aren't really going to be migrating or crumbling, so it's about whether they burn.
In general, other systems are based on long braided silica fibers, cotton, with the exception of cartomizers which are generally polyfill. For example, the Kanger subtank is cotton.
I looked at this:
http://kn100.info/hosted/scs.pdf
And RoHs directive has to do with hazardous waste in electronic components. I guess that's a baseline for what it's made out of. The Aspire website I thought indicated there might be 3 or 4 materials being used. Not just the one filler wick. I also understood zero of those chemicals/materials and didn't see anything about particle size. IMO particle size could be important. Am I missing something here?
I think you skimmed instead of reading, and then are asking people to do your homework lol. If that's snarkier than it needs to be, it's because generally if someone can't be bothered to read through a thread or even the posts that have the link they're talking about in it, they aren't that serious about it. But we're probably both just having long days, so bygones!
Their tank is based on cotton and either fiberglass or ceramic paper. The important thing to note in that link is that when they submitted it for testing to be able to access other markets like the US/EU, they said it was fiberglass paper. To be clear, neither is fit for purpose, just like a lead juice well wouldn't be.
IMO it's as dangerous to jump to conclusions as it is to ignore possible unnecessary risk.
Word.
The nautillus is the best tank I've found. Would it really be better to go back to a carto that has even more filler with unknown material?
Well I sorted the filler material above, but with this I've noticed that:
1. Some people just don't know
2. Some people don't *want* to know
3. Some people resent knowing
4. Some people don't care
In my mind this is really about #1, as people can make up their own minds and use what they want. But if I had one and didn't know this stuff, I'd be kinda put out if someone knew and didn't inform me.
I can also see potential for a smear campaign from a competitor. Not cool, but coulld happen.
Yeah, no. This is where skimming is catching up with you again -- that isn't what this is. Everything people are talking about comes from Aspire themselves, or direct from the product. I'm not sure how your brain jumped there honestly, and I'd wonder if you were schilling, which wouldn't be cool, but could happen.
(To be clear, I don't in any way think you're a schill due to your post count etc -- that was a rhetorical device to make a point about your point before you point it out)