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Figure F8. Photograph of typical plugs, seats, and OsmoSampler parts. Internal O-ring seals on the plugs are designed to seal on the gravity seats, allowing different hydrologic zones to be separated. Plug outer diameter and seat inner diameter decrease with depth, allowing multiple horizons to be sampled in a single borehole. OsmoSampler parts shown are PVC couplers that attach to clear protective tubing within which pumps and coils are protected. Ends are stainless steel connected to a 1.27 cm inner diameter stainless steel rod and galvanized 1.27 cm shackles (isolated with plastic).

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