Description
The Draeger 6728531 is the Water vapor 5/a-P detector tube, measuring range 5 to 200 mg/m3, measuring time approx. 25 min / 12.5 min (handbook). Sold by the box of 10, 10 single-use tubes. Used in the Draeger Aerotest compressed-air test units. Ships in 1–2 business days; most orders arrive in 3–7 business days. All Draeger tubes for Water vapor.
Draeger 6728531 specifications
| Item | Draeger data |
|---|---|
| Part number | 6728531 |
| Gas or substance | Water vapor |
| Tube type | 5/a-P |
| Measuring range | 5 to 200 mg/m3 |
| Measuring time | approx. 25 min / 12.5 min |
| Standard deviation | ± 15 to 20 % / +25 % |
| Color change | yellow → reddish brown |
| Temperature | 0 to 40 °C |
| Reaction principle | H2O + SeO2 + H2SO4 → reddish brown reaction product |
| Pack | Box of 10 |
| Pump | Used in the Draeger Aerotest compressed-air test units |
Source: Dräger-Tubes & MicroTubes Handbook, 22nd edition (order no. 90 92 086), Dräger Safety AG & Co. KGaA.
Cross-sensitivity (handbook): Alcohols and unsaturated hydrocarbons at high concentrations can cause diffuse discoloration of the indicating layer.
Measuring range extension (handbook): The following evaluation applies for other volumes: Value read: 5 10 30 50 70 100 150 200 mg H2O/m3 25 L Vol. 12.5 min: 10 20 70 110 160 220 340 450 mg H2O/m3 100 L Vol.: 2 4 12 20 28 40 60 80 mg H2O/m3 i.e., for a test volume of 25 L, the value read off the scale of 50 mg H2O/m3 corresponds to a measured value of 110 mg H2O/m3. Relative standard deviation: ± 25 to 30 % ( 25 L) ± 20 to 25 % ( 100 L) Dräger CMSDräger Aerotest
Other Draeger tubes for Water vapor
| Part number | Tube | Measuring range | Pack |
|---|---|---|---|
| CH23401 | Draeger Water Vapor 0.1 Detector Tubes, Box of 10 | 1 to 40 mg/L | Box of 10 |
| 8101321 | Draeger Water Vapor 0.1/a Detector Tubes, Box of 10 | 0.1 to 1.0 mg/L | Box of 10 |
| 8101781 | Draeger Water Vapor 1/b Detector Tubes, Box of 10 | 20 to 40 mg/L / 1 to 18 mg/L | Box of 10 |
| 8103061 | Draeger Water Vapor 20/a-P Tubes for Aerotest, Box of 10 | 20 to 250 mg H2O/m3 | Box of 10 |
| 8103031 | Draeger Water Vapor 3/a Detector Tubes, Box of 10 | 3.0 to 60 Ibs/mmcf | Box of 10 |
Every Draeger tube for this gas, with live prices: Water vapor detector tubes.
Draeger 6728531 questions
What does the Draeger 6728531 measure? Water vapor, measuring range 5 to 200 mg/m3.
What is the color change on the 6728531? yellow → reddish brown, read against the scale printed on the tube.
Do Draeger 6728531 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 6728531? 10. Each tube is used once.
What temperature and humidity is the 6728531 rated for? Temperature 0 to 40 °C (handbook).
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.
