| Measured Gas | Nitric Acid Vapour |
| Tube No. | 233S |
| Scaled Range | 2 to 20 ppm |
| Testable Range | 1 to 20 ppm |
| Unit Scale | ppm |
| Multi-Range | Yes |
| Original Color | Pale Yellow |
| Stain Color | Purple |
| Shelf Life | 1 Year |
| CAS No. | 7697-37-2 |
| Tube Layout | [ Detector Tube ] |
| Typical Applications |
Industrial hygiene |
| Storage Requirements |
This tube must be stored in a refrigerated place at 0 to 10°C (32 to 50°F). |
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