Description
The Draeger 6728821 is the Hydrogen sulfide 2/a detector tube, measuring range 20 to 200 ppm / 2 to 20 ppm, 1 / 10 pump strokes, measuring time approx. 20 s / approx. 3.5 min (handbook, p. 207). 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 Hydrogen sulfide.
Draeger 6728821 specifications
| Item | Draeger data |
|---|---|
| Part number | 6728821 |
| Gas or substance | Hydrogen sulfide |
| Tube type | 2/a |
| Measuring range | 20 to 200 ppm / 2 to 20 ppm |
| Number of strokes (n) | 1 / 10 |
| Measuring time | approx. 20 s / approx. 3.5 min |
| Standard deviation | ± 5 to 10 % |
| Color change | white → light brown |
| Temperature | 0 to 40 °C |
| Humidity | 3 to 30 mg H2O/L |
| Reaction principle | H2S + Hg2+ → HgS + 2 H+ |
| 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. 207, Dräger Safety AG & Co. KGaA.
Cross-sensitivity (handbook, p. 207): The indication is not affected by: 200 ppm sulfur dioxide 100 ppm hydrochloric acid 100 ppm ethyl mercaptan
Hydrogen sulfide exposure limits
| Limit | Value |
|---|---|
| OSHA PEL | C 20 ppm 50 ppm [10-minute maximum peak] |
| NIOSH REL | C 10 ppm (15 mg/m³) [10-minute] |
| NIOSH IDLH | 100 ppm |
| CAS number | 7783-06-4 |
| Formula | H₂S |
| Conversion | 1 ppm = 1.40 mg/m³ |
Source: NIOSH Pocket Guide to Chemical Hazards, Hydrogen sulfide (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 Hydrogen sulfide
| Part number | Tube | Measuring range | Pack |
|---|---|---|---|
| CH28101 | Draeger Hydrogen Sulfide 0.2%/A Detector Tubes, Box of 10 | 0.2 to 7 Vol% | Box of 10 |
| 8101461 | Draeger Hydrogen Sulfide 0.2/a Detector Tubes, Box of 10 | 0.2 to 5 ppm | Box of 10 |
| 8101991 | Draeger Hydrogen Sulfide 0.2/b Detector Tubes, Box of 10 | 0.2 to 6 ppm | Box of 10 |
| 6728041 | Draeger Hydrogen Sulfide 0.5/a Detector Tubes, Box of 10 | 0.5 to 15 ppm / 5 to 150 ppm | Box of 10 |
| 6719001 | Draeger Hydrogen Sulfide 1/c Detector Tubes, Box of 10 | 10 to 200 ppm / 1 to 20 ppm | Box of 10 |
| 8101831 | Draeger Hydrogen Sulfide 1/d Detector Tubes, Box of 10 | 10 to 200 ppm / 1 to 20 ppm | Box of 10 |
| CH29101 | Draeger Hydrogen Sulfide 100/a Detector Tubes, Box of 10 | 100 to 2000 ppm | Box of 10 |
| 8101211 | Draeger Hydrogen Sulfide 2%/a Detector Tubes, Box of 10 | 2 to 40 Vol% | Box of 10 |
| 8101961 | Draeger Hydrogen Sulfide 2/b Detector Tubes, Box of 10 | 2 to 60 ppm | Box of 10 |
| CH29801 | Draeger Hydrogen Sulfide 5/b Detector Tubes, Box of 10 | 5 to 60 ppm | Box of 10 |
Every Draeger tube for this gas, with live prices: Hydrogen sulfide detector tubes.
Draeger 6728821 questions
What does the Draeger 6728821 measure? Hydrogen sulfide in air, measuring range 20 to 200 ppm / 2 to 20 ppm.
How many pump strokes does the 6728821 take? 1 / 10 strokes (n) per the handbook, p. 207. Measuring time approx. 20 s / approx. 3.5 min.
Which pump does the 6728821 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 6728821? white → light brown, read against the scale printed on the tube.
Do Draeger 6728821 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 6728821? 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.
