Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Reexamination Certificate
2011-08-09
2011-08-09
Fitzgerald, John (Department: 2856)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
Reexamination Certificate
active
07992430
ABSTRACT:
Methods and devices for measuring chemical or biological properties of a liquid from a subsurface position are disclosed, wherein a closed casing is submerged in the liquid to be sampled. The flow of the liquid for the sampling is driven by a hydrostatic pressure and is thus independent of pumps or the like when placed at the correct subsurface position. The flow rate is in a first aspect of the present invention controlled by providing a constant hydrostatic pressure during the sampling period. Alternatively, the inlet is provided with a cartridge comprising a tracer material, which is partly soluble by the liquid and is released proportional to the flow rate.
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Herbert De Jonge, et al. “A device and method for flux-proportional sampling of mobile solutes in soil and ground water”. Environmental Science and Technology 01, Jan. 2005, pp. 274-282, vol. 39, No. 1.
International Search Report PCT/DK2005/000613 Dated May 17, 2006.
Cantor & Colburn LLP
Fitzgerald John
Sorbisense Aps
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