COAs vs. COCs: What Certs Say About Silicone Quality

COAs and COCs certify the quality of the materials that silicone suppliers send to their customers. Certificates of Analysis (COAs) report the test results for a specific batch of materials. Certificates of Conformance (COCs) simply attest to a batch’s compliance with those requirements. In other words, COAs are data-driven while COCs are not.    Specialty Silicone Products (SSP), a leading manufacturer of silicone elastomers, sends COAs that prove the quality of its materials. [...]