Lysimeter apparatus

Measuring and testing – Sampler – sample handling – etc. – With constituent separation

Reexamination Certificate

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C073S864740, C175S060000

Reexamination Certificate

active

06938503

ABSTRACT:
A suction lysimeter for sampling subsurface liquids includes a lysimeter casing having a drive portion, a reservoir portion, and a tip portion, the tip portion including a membrane through which subsurface liquids may be sampled; a fluid conduit coupled in fluid flowing relation relative to the membrane, and which in operation facilitates the delivery of the sampled subsurface liquids from the membrane to the reservoir portion; and a plurality of tubes coupled in fluid flowing relation relative to the reservoir portion, the tubes in operation facilitating delivery of the sampled subsurface liquids from the reservoir portion for testing. A method of sampling subsurface liquids comprises using this lysimeter.

REFERENCES:
patent: 4669554 (1987-06-01), Cordry
patent: 4807707 (1989-02-01), Handley et al.
patent: 5046568 (1991-09-01), Cordry
patent: 5337838 (1994-08-01), Sorensen
patent: 5465628 (1995-11-01), Timmons
patent: 5503031 (1996-04-01), Scott et al.
patent: 5889217 (1999-03-01), Rossabi et al.
Karklins et al., “Groundwater Sampling Desk Reference”, PUBL-DG-037 96, Wisconsin Dept. of Natural Resources Bureau of Drinking Water and Groundwater, Sep. 1996, pp. 88-89.
Brye et al., “An Equilibrium Tension Lysimeter for Measuring Drainage through Soil”, Journal of the Soil Science Society of America, 63:536-543, 1999.
Wisconsin Dept. of Natural Resources, Groundwater Sampling Desk Reference, PUBL-DG-037 96, Sep. 1996.
Roger Davis and Tom Oothoudt, “Drilling method may be gold at end of rainbow for difficult terrains—option exists for drilling and collecting samples on one rig”, Soil & Groundwater Cleanup, May 1997, pp. 34-36.

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