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 Large Tissue or Tissue Which Normally presents Infiltration Problems: A controlled mixture of highly purified paraffin containing plastic polymers of regulated molecular weights and a small percentage of dimethy sulphoxide for faster tissue penetration. Like Paraplast, it greatly minimizes tissue compression due to sectioning and gives brittle, difficult to cut tissues in an innate elasticity which produces excellent, wrinkle-free sections. Clearing is complete and without stainable residue.