Sample N2 flow rate/(L/min) O/(wt%) N/(wt%) C/(ppm)
1 250 1.02 33.46 627
2 0.98 33.49 653
3 1.04 33.45 701
Ave. 1.01 33.47 660
4 320 0.87 33.52 512
5 0.88 33.52 539
6 0.85 33.50 558
Ave. 0.87 33.51 536
7 400 0.81 33.55 450
8 0.85 33.52 463
9 0.85 33.51 456
Ave. 0.84 33.53 456