... China (Mainland) Grade Standard Industrial Grade, Electron Grade Purity 99.9% min Appearance Gas Application Electronics equipment,transformer,refrigerating fluid Brand ... standard conditions). 1.Dangerous NO. : 22021 2.Grade:99.995% 3.Usage:Electronics equipment,transformer,refrigerating fluid SF6 is ... -2006 IEC376-71 Specifications 3.5N 4N (SF6) % ≥99.9 ≥99.8 ≥99.95 ≥99.99 Air % ≤0.04 ≤0.05 ≤0.03 ≤0 ...