Harvard Apparatus offers five popular versions of the CPK Molecular Research and Teaching Kits.

These CPK Kits are the most accurate molecular models available. These models allow you the ability to demonstrate accurate structure, bond angles, allosteric shapes, minimization and more.

You can build base pairs of the nucleic acids to 36 peptide backbone segments in helix forms.

Harvard Apparatus CPK Kits have been used to verify computer models for functional group fit.