Draeger Hydrogen Sulfide Diffusion Tubes 10/a-D
Range: 1.3 - 300 ppm x h

10 - 300 ppm - 1 hour
5 - 150 ppm - 2 hour
2.5 - 75 ppm - 4 hour
1.3 - 40 ppm - 8 hour

**No Sample Pump is Required**