Dr Laugesen's Ruyan cartridge safety report (21 Oct 08)

[dc2k08]

http://healthnz.co.nz/RuyanCartridgeReport21-Oct-08.pdf

[Nazareth]

ok here's the thing (I didn't read the whole hting, but was struck by one issue- I may be wrong, as I said, I didn't read the hwole hting, and am not sure how the different elements were administered)-

He gave ingredients like 4-Hydroxy-2, 5-dmethyl-3(2H)-furanone (FEMA 3174, CoE 536) to rats- but the thing is that he gave them to the rats in their liquid form, not in a vaporized form, which can and does change the chemical makeup of certain elements.

We as Vaporers need to know whether these elements are safe AFTER being vaporized

A 2-year study in which rat were given a dose up to 400mg/kg bw from diet daily showed no evidence of carcinogenicity. Considering the fact that NOEL of 200mg/kg bw in rat is >2300 times the daily intake as a flavoring agent, the WHO Committee on Food Additives concludes that “the safety of this agent would not be a concern at the estimated current intake”1.

Fed in a diet- not given through vaporization.

Thanks for posting htis- always good to have more info on what we're taking in

[baalel]

Interesting reading, though I was a little puzzled by the Carbon Monoxide section where it states

As nicotine has a low vapor pressure, the piezoelectric ceramic element in the e-cigarette is needed to cause vaporization of the nicotine-propylene glycol solution.

I was under the impression that no devices on the market used piezoelectric vapourizers, all using the cheaper heating coil atomizers instead

[edisme518123]

pi·e·zo·e·lec·tric·i·ty (pī-ē'zō-ĭ-lěk-trĭs'ĭ-tē, -ē'lěk-, pē-ā'zō-) Pronunciation Key
n. The generation of electricity or of electric polarity in dielectric crystals subjected to mechanical stress, or the generation of stress in such crystals subjected to an applied voltage. source: piezoelectric definition | Dictionary.com

The vaporizer we use works very similarly to the heating element of a hair straightener. Electricity passes through a ceramic medium creating mechanical "wave energy." This "wave energy" passes through the filament causing it to vibrate rapidly and generate heat. This heat is then absorbed within and projected through the ceramic element and the wire wool surrounding it, thereby heating the contents of the wire wool and the liquid around it, causing vapor to be produced.

It sounds complex, but in essence it's pretty simple and comes out to be the atomizer that we know of. This method of heating is quite energy efficient and allows for a more accurate control of heat with minimized burning.

[Nazareth]

This "wave energy" passes through the filament causing it to vibrate rapidly and generate heat.

It sounds complex,

Not really- basically what you're saying is that we are vaping mini-vibrators

[dc2k08]

Naz, I dont even think he tested it in the rats himself. he was referring to a study in made 1989 but i think you have a point about it being in tested in vaporized form. i read the whole paper trying to find the part about the fiber in the carts but alas no such part. he does analyse every ingredient that is a part of the vapour so perhaps it didnt register but we all know that sometimes the fibers can melt/burn or what-ever they do, so im hyper-interested as to their contents.

[Mamba]

i read the whole paper trying to find the part about the fiber in the carts but alas no such part. he does analyse every ingredient that is a part of the vapour so perhaps it didnt register but we all know that sometimes the fibers can melt/burn or what-ever they do, so im hyper-interested as to their contents.

My guess is this is where the styrene is coming from. This report shows very low levels of styrene, but what would the levels be if the cartridge floss was melting/burning?

Wikipedia: Styrene

[dc2k08]

yeah, perhaps you are right. but that wiki write up also mentions that in naturally occurs in some plants and other foods so it could present as a result of any one of the ingredients. that's one thing that always bothered me. what exactly is the fiber made from?

[Grenage]

Not really- basically what you're saying is that we are vaping mini-vibrators

Thank you for making me chuckle

[TropicalBob]

E-smoking can't get any more justified as an alternative to tobacco cigarettes than this. It's all there, even the studies cited in the germ-killing vapor thread. This report says what Naz has long wanted to say: Not only is e-smoking (a Ruyan product) safer than smoking a tobacco cigarette, but it is SAFE period! I'm sure this report was completed in time for the mid-November WHO conference on e-smoking. Ruyan will likely be the only company with any kind of serious clinical information to consider. Here's hoping ...