Paraplast is recommended for general tissue embedding. It is composed of a refined mixture of highly purified paraffin containing plastic polymers of regulated molecular weights. This supports improved tissue infiltration and superior quality sections with minimal compression. Paraplast gives brittle, difficult to section tissue an innate elasticity, promoting wrinkle-free sections. It has a melting point of 56° C.
Paraplast Plus is suggested for large tissue or tissue that may normally present infiltration issues. Paraplast Plus contains a small percentage of dimethyl sulfoxide (DMSO), allowing accelerated tissue penetration. It has a melting point of 56° C.
Paraplast Xtra is recommended for lower temperature infiltration which aids in the prevention of tissue distortion. It is composed of a unique blend of low molecular weight polymers and highly purified paraffins for compression resistance and ribbon continuity. Low viscosity permits complete infiltration of dense tissue. It has a melting point of 50-54° C.
Paraplast High Melt embedding media is made from a combination of highly purified wax and plastic polymers of regulated molecular weights. Paraplast High Melt is most commonly used when sectioning with a sliding microtome and in exceedingly warmer climates where sectioning with conventional paraffins is difficult on rotary microtomes. It has a melting point of 60° C.