Specifications
| Gas & Capacity | CL2 5 HOUR or H2 5 HOUR or H2S 5 HOUR or HCN 5 HOUR |
| PPM | 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 |
| Gas & Capacity | CL2 5 HOUR or H2 5 HOUR or H2S 5 HOUR or HCN 5 HOUR |
| PPM | 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 |