The process uses toxic raw materials that could be harmful to people and the environment during the processing steps . Therefore, quality assurance is conducted through a testing phase to ensure the product meets specified standards . This is followed by a filtration step designed to remove impurities, which can result in waste products that must be handled to prevent environmental contamination. The final step is the packaging of the BAC for distribution, during which care must be taken to avoid any spillage or leakage that could harm the environment.