Nitrogen | Total Purity By Volume(%) | Maximum Levels of Impurity(ppm by Volume) | |||||||
---|---|---|---|---|---|---|---|---|---|
Grade | O2 | H2O | N2 | AR | H2 | CO | CO2 | THC | N Oxides |
Special | 99.9995 | 1.0 | 1.0 | 3.0 | Nil | Nil | Nil | 0.2 | Nil |
Grade-I | 99.991 | 2.0 | 2.0 | 5.0 | Nil | Nil | Nil | 0.2 | Nil |
Grade-II | 99.998 | 4.0 | 4.0 | 10.0 | 1.0 | 0.5 | 0.5 | 0.5 | 0.5 |
Grade-III | 99.997 | 6.0 | 6.0 | 10.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |