At the heart of the Reva educational Raman spectroscopy platform is a robust immersion contact probe utilizing a patented spherical sapphire ball lens interface. Made from hastelloy and sapphire, the BallProbe™ is impervious to all but the harshest chemical environments while allowing reduced sampling variation and remarkable ease-of-use. The short focal length of Reva allows for highly reproducible sampling of liquids, solids, slurries, powders and heterogeneous mixtures. Its simplicity of use allows non-specialists to collect high-quality data and eliminates user-to-user variation thereby overcoming one of the greatest barriers to adoption.