A general mass balance of the flux material should be performed to QA any proposed test results. Emission factors based on material usage are usually less accurate than mass balance procedures and do not reflect changes in operating procedures. Overall control device efficiencies must account for the expected collection efficiency of the device as well as the removal efficiency. Capture efficiency is often overlooked during testing. Extreme overheating could result in solder metal emissions and damage to the products.
Most flux materials contain significant quantities of various alcohols.
Some flux materials may contain CFC s or glycol ethers. Few operations, if any, discharge waste to the sewer. Data for each flux material used in each device must be provided.