The 1905 Slim Tube Soil Water Sampler is a small-diameter sampler designed for taking small-volume samples or for use where installation space is limited. The Slim Tube Sampler has a 2.2 cm (7/8") outside diameter and is supplied complete with a 100 kPa (1 bar) high-flow, screw-in porous ceramic cup, screw-top extraction cap, and clamping ring. Extension tubes can be added to increase the depth of operation.