PALL Ultipor® GF Series Filter Cartridges for Ink Jet Ink Formulation

The Ultipor GF Series of filter cartridges is comprised of the Ultipor GF Plus filter, the Ultipor GF-HV filter, and specialty Ultipor GF filters. The specialty filters are the Ultipor GF Plus hot melt ink filter and the Ultipor GF-HV lab test filter.1 Ultipor GF Plus filters are designed for the filtration of low-viscosity fluids and feature very large effective filter areas for low clean pressure drop and long service life. Ultipor GF-HV filters, which are designed for high-viscosity applications, use the same high-performance filter medium as Ultipor GF Plus filters, but in a heavy-duty pleat construction. All of these filters lower processing costs when used with the appropriate fluids.

The medium of construction for all Ultipor GF Series filters consists of resin-bonded, inorganic microfibers. It is preferred over melt-blown polypropylene fiber media for ink jet applications where higher temperatures are expected and chemical compatibility with melt-blown polypropylene fiber is a concern. The binder resin, which fully coats the fibers, effectively immobilizes them. This creates a very strong porous structure that, in addition to resisting contaminant unloading and media migration, has exceptional flow characteristics, even at very fine submicron removal ratings.