概要（Overview）

The Varian 720-ES is an analytical instrument used for gas chromatography. It offers a wide range of features, including a high-speed, high-resolution separation of volatile and semi-volatile organic compounds. It is equipped with an electron-capture detector (ECD) that allows for the detection of low levels of compounds. It also includes a split/splitless injector, a temperature programmer, a temperature control system and a computer interface.