Permadyne Handmix Polyether Impression Material is a hand-mix formulation that offers high-precision impressions, and is ideal for the one-step/two-viscosity technique when working with crown and bridge impressions, inlay and onlay impressions, functional impressions, denture and partial denture impressions. Working time, including mixing, is 3 minutes. Setting time, from start of mix, is 6 minutes.