Weed vaporizers work by heating herbal plants up to the required temperature so the chemicals inside of herb boil away to produce a vapor which can be breathed in. This is a good deal less dangerous compared with smoking or injesting the herb because it provides much better degree of control over quantity and there are a lot fewer unintended side effects.
Weed vaporizers employ several techniques of heating up the herb like thermal conduction, thermal radiation and convection. Thermal conduction is by far the most common approach where the ingredient is placed on a surface that is heated up by butane or a similar heat source which then heats up the herb causing it to release its chemicals in vaporous form. Radiation employs an intense light source to send energy into your plant and is less popular. Convection vaporizers heat the air in the vaporizers and having the air heat the herb.
Because different substances have different natural vaporization temperatures it is very important for a weed vaporizer to be able to control the temperature. For example, marijuana has a vaporization temperature of 177°C while tobacco has a vaporization temperature of 140°C. Being able to precisely set the appropriate temperature will mean that you get the most chemicals out of your herbs.
Some weed vaporizers provide digital displays that show both the actual and pre-programmed temperatures to help you set it precisely as you want it. It really is a question of personal preference but for weed it must be over 140°C which is the temperature at which trace amounts of THC can be found but below 200°C because toxins start formulating at such a high temperature. A lot of vaporizer users tend to stay with temperatures about 185°C since this is well below the toxin limit but high enough so that suitable levels of THC and vapor make their way into the collection/inhalation device.
One particular point to pay attention to is the density of the vapor makes no difference to the effect which inhaling the vapor has on you. Less dense vapor that you would get with lower temperatures can easily contain as much THC as the thicker vapor you get with higher temperatures.
