Problems encountered during the use of a sealed sampler

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With the increasing emphasis placed by ** and the industry on environmental pollution and safe production, as well as the growing focus on a people-centered approach, and given that industry standards specify certain requirements for the sampling of various media, it is required that for media that are extremely or highly hazardous, as well as Class A flammable gases and liquefied hydrocarbons, sealed sampling methods or equivalent facilities must be used at the sampling points. However, many problems arose during actual testing: (1) The small volume of the gas cylinder during sampling makes it impossible to meet the requirements for analytical testing of samples with low pressure ； (2) After sampling liquid (gasoline) cylinders, it is relatively difficult to dispose of the cylinder samples ； (2) When sampling liquids using sample bottles, it is not necessary to control the amount of sample taken ； A small amount is required for chromatographic analysis ； Analyzing octane requires a large amount of oil, and the on-site sampling setup has poor usability. Regarding whether experiences or issues can be shared regarding closed sampling devices.