| Measured Gas | Oxygen; Carbon Dioxide |
| Tube No. | 281S |
| Scaled Range | 2 to 10%; 1 to 20% |
| Testable Range | 2 to 20% |
| Unit Scale | % |
| Multi-Range | Yes |
| Original Color | White; Pink |
| Stain Color | Brown; Yellow |
| Shelf Life | 1.5 Years |
| CAS No. | 7782-44-7; 124-38-9 |
| Tube Layout | [ Detector Tube ] + [ Detector Tube ] |
| Typical Applications |
Combustion control |
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