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Porous Cup Lysimeters |
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| for Vadose (unsaturated) Zone Monitoring | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Investigation of the vadose (unsaturated) zone is an essential part of the many environmental monitoring programs. The ability to detect groundwater pollutants as the travel toward the water table is possible with the use of Monoflex Lysimeters. Early detection may result in less expensive remedial measures. Monoflex Lysimeters are soil pore water collection devices designed for permanent installation beneath the ground surface. They are closed tubular devices with a porous ceramic filter element at one end. Monoflex Lysimeters are provided with two ports; One to allow application vacuum of pressure, the other to allow delivery of collected water samples to the ground surface. Monoflex Lysimeters establish continuity between the soil pores and those in the porous element of the lysimeter. Surround the lysimeter with a silica flour of sifted soil slurry to ensure intimate contact with the surrounding soil. Application of vacuum to the lysimeter will cause the soil pore water to enter the lysimeter through the slurry and the porous filter element. The soil pore water may then be transferred to the ground surface via the sample recovery line, by pressurizing the vacuum/pressure line. |
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(925 Kb)
