The SYLOPOL® family of Silica Supports is a portfolio of silicas in particle form that are used by polyolefin manufacturers as carriers for catalytic compounds critical to manufacturing Polyethylene. In this application, the silica acts as more than a carrier of catalytic agents but also as an active participant in the polymerization process. Grace's offering of specific silicas can have a profound effect on the overall performance and economics of a catalyst system and final properties of the finished polymer. Surface area and pore volume play an integral role in catalyst design, and can be independently controlled during the gel manufacturing process, resulting in various combinations of SA and PV. The size and shape of silica supports have a major effect on controlling the final polymer size and morphology, as well as the productivity of the resulting polymerization catalyst.