The unit of measurement of the Porter Assay is the PVU (Porter Value Unit). The Porter Assay is a chemical test to help determine the potency of procyanidin containing compounds, such as grape seed extract. It is an acid hydrolysis, which splits larger chain units (dimers and trimers) into single unit monomers and oxidizes them.
The Porter Assay measures the potency of substances like grape seed extract using the PVU unit. This test breaks down complex molecules into simpler components through acid hydrolysis, allowing for a more accurate assessment of their potential.