The Direct-well is a miniature monitoring system constisting of a filter tube with filter gauze and a synthetic adapter, which is used to fix a PE tubing. Bentonite collars are slipped over the tubing, which causes the room between the tubing and the impermeable layer to be sealed. Due to its materials, the Direct-well system is suited for researching groundwater on all micro and macro parameters.

10.04 好处 直井

  • 小口径,大流量性能
  • 可用于任何 5-7 厘米钻孔/套管
  • 非常适合声波钻头套管锤击或振动,7 厘米套管
  • 膨润土将堵塞整个孔,无回填
  • 无沙子和膨润土颗粒
  • 配备声波钻探 GP63 套管,可快速安装至较大深度
  • 组件经 KIWA Hallmark 检查
  • 适合所有环境参数


  • Simple installation.
  • Very low purging volume before sampling.
  • Easy sampling with peristaltic pump or foot
  • valve pump.
  • Strongly reduced water/air contact surface,
  • resulting in minimal stripping effects and
  • minimal oxidation
  • Water level measurements with sounding
  • apparatus with electrode diameter 4.8 mm.
  • Can be used to large depths.
  • Ideal monitoring well for use in gravel layers;
  • perfect and rappid installation through
  • percussion, sonic and sounding techniques.
  • Little costs of materials and installation.

Direct-well filter

The Direct-well filter consists of a perforated pipe, length 1 or 2 m, covered with filter gauze (outside diameter 36 mm). At the top of the filter pipe a synthetic adapter allows fitting a 36mm x 2m tubing. The Direct-well filter is suited for application in a 45-70 mm drilled hole, as well as in a 40-70 mm casings.

Bentonite collar

The available bentonite collars, diameter 35x15 mm and length 0.5 m, are suited for 10x12 mm tubing. The collars weigh 2 kg/m.