Flow restrictors for GC pressure relief valve loop sampling with backflush of pre-column to vent

Flow restrictors is forged by mold type, its pneumatic resistance material is resistant to high temperature, corrosion, hardness, small coefficient of thermal expansion, the flow rate is less affected by environmental changes, is an ideal stainless steel pneumatic resistance wire upgrade alternative products. At the same time, its uniform and regular shape and size are more suitable for the modular and miniaturized design of chromatographs, which is conducive to further improving the stability and overall quality of chromatographic detection technology.