Probes for Sampling Ground-Water for Gas Analysis

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Abstract
The probe has a ceramic cup, of pore-size 7-10/[mu], near its lower end, connected to the upper end by two stoppered capillary tubes. When cup and tubes were filled with water, this became replaced by ground water in 15 days on the sites investigated. Sequential samples, filtered and unaffected by gas exchange with the atmosphere, could thus be obtained throughout the year and without disturbing the soil.

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