Reply: The portable total hydrocarbon analyzer has only one chromatographic column (empty column) to measure the concentration of total hydrocarbons, while the portable methane and non-methane total hydrocarbon analyzer has two chromatographic columns, one for total hydrocarbons and one for methane. The difference value between them can obtain the concentration of non-methane total hydrocarbons.

Reply: The portable methane and non-methane benzene series analyzer is equivalent to an upgraded version of the portable methane and non-methane total hydrocarbons.
A chromatographic column is added inside the instrument to separate benzene series and can detect the characteristic factors such as benzene, toluene, and xylene.

Reply: The interior of the host adopts a modular design, and accessories such as carrier gas, hydrogen, standard gas and other gas cylinders and batteries are integrated inside the host. There is no external gas cylinder accessory box and battery accessory box, and no external connection is required. It is easy to use and portable. At the same time, it can prevent the safety hazard of gas leakage caused by external hydrogen, and the built-in standard gas can provide quality control requirements on site. Three kinds of gas cylinders are built in the back of the instrument, and are connected by threads, which can be installed and replaced without tools, which is very convenient.