Purity of argon
the purity of argon has different grades according to different uses, mainly depending on the percentage of argon content in argon and the content of impurities.
Common argon purity grades
- industrial Argon (99.5-99.9%)
- uses: Used in welding, metallurgy and general industrial production.
- Impurities: Contains a small amount of oxygen, nitrogen and moisture.
- High Purity Argon (99.99-99.999%)
- uses: Widely used in the field of electronic manufacturing, such as semiconductor production.
- Impurities: Less impurities to prevent contamination in sensitive processes.
- Ultra High Purity Argon (99.9999%)
- uses: Used in research laboratories, medical gases and advanced electronic equipment manufacturing and other high-demand areas.
- Impurities: Impurity levels are very low, reaching parts per billion (ppb) levels.
Factors Affecting the Purity of Argon
- production process
- argon is mainly obtained through the fractionation of liquid air, and advanced distillation and purification technology can further improve the purity.
- Storage and transportation
- during storage or transportation, impurities such as moisture and oxygen may enter the argon, so a well-sealed container is required.
- Application requirements
- different industries have different requirements for argon Purity. For example, the welding industry has lower requirements for argon purity than the semiconductor manufacturing industry.
Certification and Standards
- ISO international standard
- the purity levels and impurity limits for different applications of argon are clearly defined.
- Supplier Specification
- gas suppliers usually provide detailed purity certificates to ensure product quality.