... desander, used to remove very fine particles, or silt, from drilling fluid. Desilter keeps the amount ... level. The TR desilter is designed to remove silt-sized (15-47) microns solids from drilling fluids ... , used to remove very fine particles, or silt, from drilling fluid. Desilter keeps the amount ... level. The TR desilter is designed to remove silt-sized (15-47) microns solids from drilling fluids ...