Reconditioned SF6 Gas

Used gas with a better quality than new

Thanks to the combination of several DILO gas separation and preparation units, we can process even extremely contaminated SF6 gas with to a purity of > 99.9 %. This not only exceeds industry's reuse standards, but DILO Certified SF6 Gas also exceeds current specifications for new gas.

DILO Certified SF6 Gas Compared to IES and ASTM Standards

Substance

DILO

Certified Gas     

IEC 60376:2018*    
(Virgin gas)
ASTM D2472-15
SF6 > 99,9 Vol.%
(> 99,99 wt%)     
> 98,5 Vol.% ≥ 99,8 wt%
H2O ≤ 8 µl/l < 200 µl/l ≤ 8 ul/l
Frost point (100 kPa) ≤ -62 °C -36 °C -62 °C
Total acidity (HF equiv.)       < 0,1 µl/l < 7 µl/l ≤ 0,3 ppmw
Air < 500 µl/l < 10.000 µl/l ≤ 500 ppmw (≙ 2500 µl/l
CF4 < 500 µl/l < 4.000 µl/l ≤ 500 ppmw (≙ 830 µl/l)
Oil mist < 1 mg/kg < 10 mg/kg
SO2 < 0,1 µl/l


*For use in mixtures with N2/CF4, SF6 purity of 99.7 % by volume is recommended.
µl/l = ppmv; mg/kg = ppmw, wt% =  percentage by weight