As part of our continuous commitment to quality we test EVERY batch of our products for minimum 98% purity. Below are our most recent third party COA’s for each product. Values between 100% and 101.9% indicate that our sample was purer than the reference standard it was measured against since reference standards are also minimum 98% purity. We recommend that buyers of research chemicals ALWAYS use a source that is third party tested and to call third party labs to confirm that the results you see online are legitimate before purchasing products.