Evacuate gas sampling vials (180 each) in National Soil Tilth Lab (Dr. Tim Parkin's lab)
Fig. 1 Vial evacuation equipment in NSTL, USDA
With Jim Seevers and Dr. Tim Parkin
Decide to make mesh bags with commercially available window screen (mesh size 2mm, fiberglss material).
With Dr. Jin-Kie Yeo
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