A vaporisor is a device that detaches the active ingredients of recreational or medicinal herbs for inhalation. Its use is much healthier than smoking and incensing. Vaporizers extract the components from herbs at cooler temperatures, thereby avoiding the harmful effects of combustion.

A popular vaporisor is an electronic-cigarette, which has a canister of liquid nicotine in different potencies and a light that glows when it’s working. When you inhale, the device heats and atomizes the liquid into a vapor that you can inhale. You can buy rechargeable or disposable models. Some are small enough to hold in your hand. The main risks of e-cigarettes include nicotine, which can harm your brain development and cause other health problems; metal, which can contaminate the vapor; and diacetyl, which may lead to a lung disease called bronchiolitis obliterans (also known as popcorn lung).

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Some anesthesia machines have a fixed vaporizer that houses a reservoir for a volatile anesthetic such as halothane. There is also an interchangeable cassette that contains the anesthetic and is connected to the vaporizer by a fixed circuit. This circuit is insulated to prevent contamination from the patient’s breathing and is controlled by the anesthesia machine’s microprocessor. It senses information from the flowmeters, temperature and pressure sensors inside the vaporization chamber, and communicates this to the control electronics system.

The vaporizer also has a bypass circuit with a fixed restrictor that’s adjustable by the user to control the concentration of anesthetic. This is connected to the vaporizer via a unidirectional valve that stops backpressure from passing through the fix restrictor into the anesthetic circuit.