History of the vaporiser / E-Cig
Electronic cigarettes were intended to be a less-toxic (or “safer”) option to smoking tobacco cigarettes, but not a treatment to quit smoking. Chinese pharmacist Hon Lik invented the e-cigarette in 2003 with a patented ultrasonic technology. Hon Lik was inspired to invent this smoking alternative, because his father was dying from lung cancer. Since then, most e-cigarette manufacturers use a heating element that vaporizes the nicotine liquid instead.

How do electronic vaporisers (e-cig) work?
Electronic cigarettes are slim, battery operated vaporizers that produce a rich mist of nicotine vapour for inhalation.
Electronic Cigs contain no tar or toxic chemicals, generate carbon monoxide, pass on second hand smoke & emit noxious odours. Although they cannot be marketed as smoking concession devices, many users testify that they have helped them to give up tobacco. Many more have used e-cigs to supplement and reduce their traditional cigarette use.

How to use your vaporiser (e-cig)
Unlike the tobacco cigarette, modern electronic vaporisers do not rely on combustion to release the nicotine from the clearomiser (tank that sits on top of the battery). All you need to do is press a button and inhale and you get nicotine laced vapour.
Once the button is pressed it initiates the atomizer’s heating coil to warm the e-juice that contains dissolved nicotine and flavourings. When you stop pressing the button, the atomizer stops working, too. You can put it down anywhere or even back in your pockets, no worries.
To get a satisfying throat hit that rivals a tobacco cigarette, you need a good quality device with well powered battery and the right kind of e-juice mixture. On average a rechargeable lithium ion battery that will allow about 300 -600 puffs for every full charge.
Some kits offer a spare battery so you can still use the device while the other one is charging. The right mix of e-juice gives you the throat hit, which gives you an impression similar to the ones a durry gives.

Nicotine
It’s well documented that currently available treatments for smokers, nicotine replacement therapies such as patches and gums, are largely ineffective, with just a 7% success rate after 12 months. This is largely due to the fact that smokers aren’t just addicted to the nicotine; they are addicted to the actual habit and ritual of smoking a cigarette. It is a comfort system for them. That is even stronger than nicotine addiction.
However, the greatest danger in cigarette smoking is not the nicotine. Nicotine, while highly addictive, is a stimulant similar to caffeine and not toxic in low, intermittent doses, which is why it can be used in nicotine replacement therapies. Nicotine, by itself, does NOT cause cancer, but is known to have some side effects. Cigarette smoke, on the other hand, contains more than just nicotine. It contains hundreds of toxic chemicals and dozens of known carcinogens.
Hon Lik seems to have believed that there could be an option for smokers, to still have the act of smoking, while limiting exposure to the chemicals, toxins and carcinogens found in tobacco smoke. He had to have known that the smoker would still need relief from the nicotine addiction, so to get them to switch to the less toxic electronic cigarettes; he had to include doses of nicotine. The typical electronic cigarette liquid grade propylene glycol (PG), vegetable glycerine (VG), food grade flavouring and nicotine.

What is in E-Juice / E-Liquid?
Standard issue e-juice is often made with mix of pharmaceutical grade propylene glycol (PG), vegetable glycerin (VG), food grade flavouring and nicotine if so desired. Some people prefer the less irritating vegetable glycerin (VG). Put too much PG and it gets too sweet add more VG makes a greater vapour. Most people prefer a range of 70% PG to 30% VG to a 50% PG to 50% VG.
E-juice / E-Liquid is the solution that contains dissolved nicotine, flavourings, PG and or VG. There is no industry standard E-juice / E-Liquid as the concentrations of each component vary with different manufacturers. Important information is the indicated nicotine content on the label.
The rule of thumb for those wanting to start and not have that craving for the toxic tobacco cigarette need to find the usual nicotine level in their cigarettes and add 4 to 6mg like when using patches or gum and then gradually taper the dose until their bodies no longer rely on the substance. This also comes with different flavourings to make it aesthetically pleasant to inhale. Menthol and tobacco are preferred variants of more mature users while the younger crowd opts for more fruit or sweets based flavouring.

What is propylene glycol (PG)?
Propylene glycol is actually approved for human consumption by the TGA and approved for human inhalation by the EPA. It is a common ingredient in many foods and medicines, such as asthma puffers, imitation food flavouring, toothpaste, cough syrup, hand sanitizer, lotions, cosmetics and more.

What is vegetable glycerin (VG)?
Glycerin, also known as glycerol, Vegetable glycerin can also be made directly from vegetable oil often coconut or palm oil.
Glycerin is widely used in the food industry for two main reasons: it has a sweet taste, but has fewer calories than sugar; and it is hygroscopic, that is, it absorbs moisture from the air. It is therefore used both to sweeten foods and to keep them moist. The compound is metabolized more slowly than sucrose — the type of sugar most commonly found in candy and in processed foods — and therefore does not have such a dramatic effect on blood sugar levels. It also does not contribute to bacterial tooth decay. Foods marketed as being low in carbohydrates are often sweetened with glycerine.