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| impaction sampler (Assessing microbial quality of air should involve the use of active devices including but not limited to impaction, centrifugal, and membrane (or gelatin) samplers. (FDA) Wakeful dormouse) | |||
| impactor sampler | |||
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| impaction sampler (Assessing microbial quality of air should involve the use of active devices including but not limited to impaction, centrifugal, and membrane (or gelatin) samplers. (FDA) Wakeful dormouse) | |||
| impactor sampler | |||