Supplier establishes a work procedure for contamination/mix prevention of restricted chemical substances when using restricted chemical substances in process.
Especially when using REACH SVHC and candidate SVHC material, the supplier checks that the amount remaining on the finished part or assembly is less than 0.1 wt% by part or asm before beginning mass production.
(Supplier defines segregation/control methods if using Non-RoHS / Non-HF / Non-REACH materials for other customers and has layout of the manufacturing line and stock area.)