Description
The Draeger CH28301 is the Phosgene 0.25/c detector tube, measuring range 0.25 to 5 ppm, 5 pump strokes, measuring time approx. 1 min (handbook, p. 246). Sold by the box of 10, 10 single-use tubes. Read on a Draeger accuro or X-act 5000 tube pump. Ships in 1–2 business days; most orders arrive in 3–7 business days. All Draeger tubes for Phosgene.
Draeger CH28301 specifications
| Item | Draeger data |
|---|---|
| Part number | CH28301 |
| Gas or substance | Phosgene |
| Tube type | 0.25/c |
| Measuring range | 0.25 to 5 ppm |
| Number of strokes (n) | 5 |
| Measuring time | approx. 1 min |
| Standard deviation | ± 15 to 20 % |
| Color change | yellow → blue-green |
| Temperature | 5 to 35 °C |
| Humidity | 3 to 15 mg H2O/L |
| Reaction principle | COCl2 + diethylaniline + dimethylaminobenzaldehyde → blue-green reaction product |
| Pack | Box of 10 |
| Pump | Read on a Draeger accuro or X-act 5000 tube pump |
Source: Dräger-Tubes & MicroTubes Handbook, 22nd edition (order no. 90 92 086), p. 246, Dräger Safety AG & Co. KGaA.
Cross-sensitivity (handbook, p. 246): Hydrochloric acid has no effect up to 100 ppm. A phosgene measurement is not possible in the presence of car- bonyl bromide and acetyl chloride, as both are also indicated with different sensitivities.
Phosgene exposure limits
| Limit | Value |
|---|---|
| OSHA PEL | TWA 0.1 ppm (0.4 mg/m³) |
| NIOSH REL | TWA 0.1 ppm (0.4 mg/m³) C 0.2 ppm (0.8 mg/m³) [15-minute] |
| NIOSH IDLH | 2 ppm |
| CAS number | 75-44-5 |
| Formula | COCl₂ |
| Conversion | 1 ppm = 4.05 mg/m³ |
Source: NIOSH Pocket Guide to Chemical Hazards, Phosgene (OSHA PEL from 29 CFR 1910.1000 Table Z as listed there). TWA = 8-hour time-weighted average, ST = short-term (15-minute), C = ceiling, Ca = NIOSH potential occupational carcinogen.
Other Draeger tubes for Phosgene
| Part number | Tube | Measuring range | Pack |
|---|---|---|---|
| 8101521 | Draeger Phosgene 0.02/a Detector Tubes, Box of 10 | 0.02 to 1 ppm / 0.02 to 0.6 ppm | Box of 10 |
Every Draeger tube for this gas, with live prices: Phosgene detector tubes.
Draeger CH28301 questions
What does the Draeger CH28301 measure? Phosgene in air, measuring range 0.25 to 5 ppm.
How many pump strokes does the CH28301 take? 5 strokes (n) per the handbook, p. 246. Measuring time approx. 1 min.
Which pump does the CH28301 use? A Draeger tube pump: the accuro hand pump or the X-act 5000. Per the handbook (p. 28–29), Draeger short-term tubes and Draeger tube pumps are matched at the factory and form a single unit; using other pumps with Draeger tubes, or other tubes with Draeger pumps, can impair the measurement.
What is the color change on the CH28301? yellow → blue-green, read against the scale printed on the tube.
Do Draeger CH28301 tubes expire? Yes. Draeger prints an expiration date (month and year) on the package; the handbook states a typical shelf life for the customer of up to two years, stored sealed at the temperature on the package strip (handbook section 2.13).
How many tubes are in a box of CH28301? 10. Each tube is used once.
Guides: what Draeger tubes measure · pump strokes and measuring time · how to read a tube · expiration and storage · cross-sensitivity · all tubes by gas and range.
