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Solvent Sampling Siphon

IP.com Disclosure Number: IPCOM000082789D
Original Publication Date: 1975-Feb-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Edwards, MA: AUTHOR

Abstract

Described is a sampling "thief" for sampling of bulk liquids, which can be permanently mounted in a bulk tank and which is more efficient, safer, and easier to use.

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Solvent Sampling Siphon

Described is a sampling "thief" for sampling of bulk liquids, which can be permanently mounted in a bulk tank and which is more efficient, safer, and easier to use.

The "thief" comprises a U-shaped tube 10 of inert material such as tetrafluoroethyelene. One leg of the U, 10a, may be longer than the other leg 10b and has a fitting 12, adapted to seat in the drum opening, affixed thereto. At the end of the shorter leg 10b is a 3-way stopcock 17 for sealing of the unit. Immediately above the stopcock 17 is a reservoir 16 into which extends a vent tube 14, containing a check valve 15. Tube 14 has a rubber bulb 13 on the end opposite the reservoir 16.

The unit is operated by squeezing the bulb 13 to vent out the air in the tube 10 until the reservoir 16 is filled. Once the reservoir 16 is filled, a sample can be drawn off by opening stopcock 17. By placing the reservoir 16 below the fitting 12, a siphon action can be obtained with the liquid continuing to flow until the stopcock 17 is again closed. Upon reopening the stopcock the liquid will again flow without repriming the unit.

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