The core differences between specialty gases and ordinary industrial gases lie in four main dimensions: purity, application, properties, and usage requirements.
In terms of purity, ordinary industrial gases have lower purity (e.g., industrial nitrogen is mostly 99.5%-99.9%), meeting only basic industrial needs; specialty gases have extremely high purity (≥99.999%), suitable for high-precision and high-requirement scenarios.
Regarding applications, ordinary industrial gases are used in general-purpose scenarios, such as oxygen for welding and cutting, nitrogen for simple inert protection, and carbon dioxide for fire extinguishing or food preservation; specialty gases are used in specific processes or high-end fields, such as electronic specialty gases for chip manufacturing, medical specialty gases for anesthesia or treatment, and scientific research specialty gases for cutting-edge experiments.
In terms of properties, ordinary industrial gases are mostly single-component and stable (e.g., nitrogen and argon are highly inert), with lower hazards; specialty gases sometimes possess flammable, explosive, toxic, or highly corrosive properties, posing higher risks to the environment and human health. In terms of usage requirements, ordinary industrial gases have simple application processes and low requirements for equipment and environment; specialty gases require specialized equipment, precise control of parameters (temperature, pressure, flow rate), and operators must be professionally trained.
In terms of application scenarios, ordinary industrial gases are suitable for traditional industrial production (such as steel smelting and building welding) and basic daily needs (such as food preservation and general cutting); however, for applications in electronics and semiconductors, high-end medical care, precision chemicals, and cutting-edge scientific research, corresponding types of specialty gases must be selected, such as electronic specialty gases for chip manufacturing, ultra-high purity helium for nuclear magnetic resonance imaging equipment, and medical radon for tumor treatment.
