The 1400, Tempe Pressure Cell, is used to determine the water-holding characteristics of a soil sample (up to 1/2 bar). The cell accepts an undisturbed soil sample contained in a 2-1/4″ (5.7 cm) diameter x 3 cm tall cylinder, such as that taken with The 0200 Soil Core Sampler. Cell comes with a 1/2 Bar Ceramic Plate.