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| Diffusive Samplers: A Possible |
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| Alternative
to Canisters |
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| ADVANTAGES |
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| u | Inexpensive and |
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| simple to
operate |
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| u | Lightweight and |
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| unobtrusive |
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| DISADVANTAGES |
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| u | Sensitivity
issues |
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| u | Reverse
diffusion |
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| effects |
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| u | Demonstrate |
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| “starvation” at
face |
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| velocities less
than |
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| 5 cm/sec |
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