Most inhalation anesthetics are liquid at room temperature and have some volatility. If you want to convert the inhalation anesthetics from liquid to gas state, you must need a special equipment, this equipment is the volatile tank. The concentration of anesthetic gas just evaporated will be very high, so the direct application will bring danger to patients, so other gases are needed to dilute, this gas used to dilute is called the carrier gas, usually using the carrier gas is oxygen. Inhaled general anesthetics are also drugs, and also need to be administered precisely, so the concentration of the precipitated gas should be precise. This precision equipment that converts liquid inhalation anesthetics into a gaseous state and outputs the gas at the desired concentration is called a volatile tank. This gas containing oxygen and inhalation anesthetics is the anesthetic gas used. These anesthetic gases are delivered to the patient through special lines called anesthesia circuits. Inhalation anesthetics are first evaporated in the evaporator tank, then diluted to the required concentration by the carrier gas, and then passed through the complex anesthesia circuit into the patient’s body to achieve the anesthetic effect. The most important thing is to have an anesthesiologist who knows how to use this equipment.