All Paraplast brand tissue embedding media are made of a combination of highly purified wax and several plastic polymers of greater tensile strength and elasticity. This results in greater compressiiblity ( without crumbling) during sectioning, rapid inflitration and thinner sections which flatten in a thermostatically controlled water bath. Recommended for Lower Temperature Infiltration Preventing Tissue Distortion: A unique blend of low molecular weight of polymers and highly purified paraffins for exceptional compressionresistance and ribbon continuity. Low viscosity permits complete inflitration of dense tissue. Cut section are free of distortion and morphology is preserved. Clearing complete and without stainable residue.