This ceramic part is developed from a moderately fired largely Talc body. The resulting ceramic material, made from a time proven formula, is a utilitarian ceramic having good porosity, tough exterior and interior surfaces, and is ivory white in color. This material is recommended for general purpose uses that involve pressure differentials under 1 Bar (14.5 psi). Typical bubbling pressure is 20 to 30 psi, the effective pore size 1.7 micron, hydraulic conductivity .000000756 cm/sec, approximate porosity 34% by vol. and flow through 1/4 inch plate is 5.0 ml/hr/sqcm,@14.7 psi. This ceramic is an excellent choice where cost and precise content of fluids or extracts are not at issue. This material has been applied successfully to tensiometers, pressure plate assemblies, suction tables and the like for nearly 50 years. This ceramic is not recommended for precision fluid sampling work as it has some ionic exchange sites and a mineralogy that is leachable with strong acids over the years. This is the perfect choice for those needing a low cost industrial ceramic product or where the science requires no sampling or chemistry of fluids transferred though ceramic pores.