Earth Pro PAC is a high purity, low molecular weight polyanionic cellulose polymer. It is available in Regular and Low Viscosity grades.
Earth Pro PAC is a primary fluid-loss reducer for water-based drilling fluids. Earth Pro PAC-Regular also provides secondary viscosity. Earth Pro PAC-LV should be used when fluid loss control without additional viscosity is required. Due to being highly polyanionic, this polymer has shale stabilizing properties by absorbing onto positive sites on formation substrates and establishing a physical barrier.