The P.D.Q. family of liquid purging compounds lets you purge you molding and extrusion machines quickly and easily, allowing quicker color changes and faster start ups. P.D.Q. works with the carrier resin to remove all thermoplastics, and is effective for resin-to-resin and color-to-color changes. It requires no soaking, which maximizes production up time. It is product that can be used very safely in the manufacturing environment. It is heat stable, non-flammable, non-toxic, almost odorless and non-corrosive. An added benefit is that it costs much less than many of the conventional purging products.