Abstract: The present invention provides an apparatus for preparing and testing material samples, comprising a back plate and a center section having two mixing chambers formed by two adjacent circular apertures in the center section, each of the mixing chambers having an interior surface with a first angulation sloping down toward the back plate, the center section also including a port in fluid communication with the mixing chambers and the outside of the center section for disposing a material sample within the mixing chambers, the center section being releasably secured to the back plate.

Abstract: The present method of test sample recovery comprises the steps of: placement of granulated solid material within a multi-chambered, multi-sectioned apparatus having an angulated interior surface; rotatably mixing the material of said sample through the use of rotors axially disposed within the chambers of the apparatus wherein the exterior surface of said rotors exhibits an angulation which is opposite in slope to the angulation of the interior surface of the mixing chambers; maintaining a constant pressure level within the chambers; controllably heating the material of the sample until a state of flux is obtained; monitoring the viscosity of the sample in order to ascertain the point at which cross-linking is attained; continuing the above steps until a hardened solid-state is reached; opening of the test chamber; and removing the hardened test sample which, by virtue of said opposing angulations of the test chambers and rotors, imparts to the cross-linked sample a self-releasing physical characteristic whic