Color Diffusion Tubes
 On-the-spot results
- Simple-to-use and economical; Break tube end off and sample;
No pump needed
- Accurate and reliable TWA sampling; Calibrated scale printed
directly on tube allows on-the-spot reading of exposure; No charts
or lengthy calculations needed
- Convenient and easy-to-use tube holder
Allows safe tube end removal and secure sampling in the breathing zone
Using the principles of gas diffusion and colorimetric reaction, Dräger
Color Diffusion Tubes allow the user to reliably measure Time-Weighted
Average (TWA) concentrations for up to eight hours. An easy-to-use tube
holder allows safe tube end removal and secure sampling. Color Diffusion
Tubes can be evaluated at any point during a workshift. The calibrated
scale printed directly on each tube indicates parts-per-million-hours (ppm-hours).
For a TWA reading, simply determine the point where the stain length ends
and divide this reading by the total length of sampling time. No pumps,
charts, or analyses are needed.
To use a Diffusion Tube, place the tube in the
tube holder with the red dot on the tube visible above the hinged
portion of the holder
(Figure 1). |
Figure 1 |
| Open the tube by grasping the ends of the tube
holder, with the red dot on the tube away from the body, and
bending the holder until the tube breaks (Figure 2). |
Figure 2 |
| Remove the end of the tube from the holder and
discard. The Diffusion Tube is ready for use. Snap the tube into
the tube holder with the open end positioned at the open end
of the holder (Figure 3). |
Figure 3 |
Attach the diffusion tube holder to a worker's pocket or lapel and note
the starting time of the test. At the end of the workshift, or any time
during the workshift, the user can evaluate the tube.
When using Diffusion Tubes, the Time-Weighted Average (TWA) can be calculated
at any time during the measurement by simply dividing the length of the tube
reading (in ppm-hours) by the elapsed sampling time (in hours).
Ordering Information Online
Ordering
| Chemical Hazard |
Measuring Range (ppm-hrs) |
Qty.
(per pkg.) |
Cat. No. |
| Acetic acid |
1.3 - 200 |
10 |
|
| Ammonia |
2.5 - 1500 |
10 |
|
| Butadiene |
1.3 - 300 |
10 |
|
| Carbon dioxide |
65 - 20000 |
10 |
|
| Carbon dioxide |
0.13 - 30 vol% |
10 |
|
| Carbon monoxide |
6 - 600 |
10 |
|
| Ethanol |
125 - 25000 |
10 |
|
| Hydrochloric acid |
1.3 - 200 |
10 |
|
| Hydrocyanic acid |
2.5 - 200 |
10 |
|
| Hydrogen sulfide |
1.3 - 300 |
10 |
|
| Nitrogen dioxide |
1.3 - 200 |
10 |
|
| Perchloroethylene |
25 - 1500 |
10 |
|
| Sulfur dioxide |
0.7 - 150 |
10 |
|
| Toluene |
13 - 3000 |
10 |
|
| Trichloroethylene |
25 - 1000 |
10 |
|
| Color Diffusion Tube holders |
3 |
|
This page was last modified June 1, 2004
|
