Characteristics of centralized gas supply system：

1. Characteristics: The laboratory is required to use carrier gas with constant flow rate and high purity, which can provide the gas with stable quantity value and pressure for the analysis equipment selected in the laboratory.

2. Economy: Building a centralized cylinder room can save limited laboratory space, and it is not necessary to cut off the gas when replacing the cylinder, so as to ensure the continuous supply of gas. Users need to manage fewer cylinders and pay less cylinder rent because all points of use using the same gas come from the same source. This type of supply will ultimately reduce transportation costs, reduce residual gas in empty cylinders returned to gas companies, and improve cylinder management.

3. Utilization rate: Centralized pipeline supply system can place gas outlet at the point of use, so that the workplace can be designed more rationally.

4. Security: Ensure the safety of storage and use. To protect the analytical tester from toxic and harmful gases during the experiment.