Use to determine the coefficient of permeability by the constant head method for laminar flow of water through granular soils.
Two manometer ports are grooved & screened on the inside. Distance between ports is always equal to diameter. 100 mesh screens used to prevent migration of material through valves & tubing during test. Acrylic chamber permits viewing sample. Spring incorporated into top cap to apply 5-10 lbs. force against screen to prevent soil density changes. End caps and clamping ring are anodized aluminum. Each cell comes complete with valves and perforated screens. 9" (229mm) cells are made to order.
ASTM D2434, BS 1377 Part 5