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