Abstract: A device and test method for characterizing granular materials for angle of repose, static and dynamic flow properties, and process parameter variables by means of defining a sample retention boundary. The device is composed of a funnel for dynamic testing, a retention ring for static testing, a base, and a test device having an upper surface set at one or more angles to determine conditions in which samples are retained. By varying the texture of the surface, flow characteristics and other process issues can be evaluated.

Abstract: A tablet coating useful for coating an active selected from the group consisting of aspirin, ibuprofen, naproxin sodium, acetaminophen, celecoxib, sildenafil citrate, alendronate sodium, an analgesic in combination with one or more of an antitussive, antihistamine, decongestant and expectorant, oxaprozin, comprising gellan gum along with a process which comprises admixing gellan gum and water under effective shear conditions to prepare an aqueous gellan gum coating composition thereof whereby the aqueous gellan gum coating composition is applied in an adherent fashion to a placebo or a tablet containing an active to form a gellan gum coated placebo or gellan gum coated active.