The Large Capacity Ultra Soil Water Sampler is used where samples are collected to detect concentrations of organic or inorganic solutes or pesticides, with sensitivities in parts per billion. The Ultra Soil Water Sampler is made entirely of 1 bar high-flow,high fire, pure alumina ceramic and uses a combination ceramic and glazing. The ceramic materials has high-flow characteristics, high alumina content for very low adsorption characteristics, and moderate bubbling pressure (1 bar or 100 kPa). The lower 1/3 of the cup is glazed on the inside to retain the collected sample. Teflon compression fittings are threaded into the top plug, which permit the use of 1/4" diameter Teflon tubing for the cleanest sample extraction available. This sampler has an outside diameter of 4-1/8 in. (10.47 cm) and a 15.5 in. (39.37 cm) overall length. This larger sampler retains a 530 ml sample. The 1922 with a smaller diameter 1.62 in.(4.11 cm) and shorter length of 10.0 in.(25.4 cm) and holding lesser volume at 80 ml.