Argon
|
Grade |
Total Purity by volume (%) |
Maximum levels of impurities (ppm by volume) |
O2 |
H2O |
N2 |
H2 |
CO |
CO2 |
THC |
N-oxides |
Special |
99.9995 |
1 |
1 |
3 |
ND |
ND |
ND |
0.2 |
ND |
UHP-I |
99.9993 |
2 |
2 |
3 |
ND |
ND |
ND |
0.2 |
ND |
UHP-II |
99.998 |
4 |
4 |
10 |
2 |
0.5 |
0.5 |
0.5 |
0.5 |
Cylinder Colour : Peacock Blue; with suitable grade identification label |
Cylinder Valve : Right hand - conforming to IS 3224 |
|
Hydrogen |
Grade |
Total Purity by volume (%) |
Maximum levels of impurities (ppm by volume) |
O2 |
H2O |
N2 |
Ar |
CO |
CO2 |
THC |
N-oxides |
Special |
99.9995 |
1 |
1 |
2 |
ND |
ND |
ND |
0.5 |
ND |
UHP-I |
99.999 |
2 |
2 |
10 |
ND |
ND |
ND |
0.5 |
ND |
UHP-II |
99.995 |
4 |
4 |
40 |
ND |
1 |
0.5 |
1 |
0.5 |
Cylinder Colour : Signal Red; with suitable grade identification label |
Cylinder Valve : Left hand - conforming to IS 3224 |
|
Helium |
Grade |
Total Purity by volume (%) |
Maximum levels of impurities (ppm by volume) |
O2 |
H2O |
N2 |
Ar |
CO+CO2 |
H2 |
THC |
N-oxides |
Special |
99.9985 |
2 |
2 |
10 |
ND |
0.5 |
ND |
0.5 |
ND |
Standard |
99.995 |
4 |
4 |
40 |
0.5 |
1 |
ND |
0.5 |
ND |
Cylinder Colour : Middle Brown; with suitable grade identification label |
Cylinder Valve : Right hand - conforming to IS 3224 |
|
Zero Air |
Grade |
Maximum levels of impurities (ppm by volume) |
H20 |
CO2 |
THC |
UHP-1 |
2 |
1 |
1 |
Cylinder Colour : French Grey; with suitable grade identification label |
Cylinder Valve : Right hand - conforming to IS 3224 |
|
MERCURY, CHLORINE AND SULPHUR COMPOUND contents are below detection limits in all the above grades.
Filling Pressure 145 kg / cm2( + 5 kg / cm2) |