RoHS vs Non-RoHS - Best Practice for preventing Cross-Contamination?

RoHS vs Non-RoHS - best practice for preventing cross-contamination?

Hi, all. A division of my company manufactures both RoHS & Non-RoHS parts. I'm helping them to document how they prevent cross-contamination, and their methods seem fine to me. But I want to ensure it's the best it can be, and so I'm wondering how everybody else does it.

For our part, fundamentally:
- part number clearly identifies RoHS compliant components ("R" suffix)
- parts are stored in a bin which is specific to that part number only
- parts are bagged to ensure no mixing of parts
- MO identifies type of solder (lead vs lead-free)
- solder pots are dedicated (lead vs lead-free)
- solder stations are not dedicated; but the solder machine tip is changed after each job & the workstation cleaned after use
- lead-testing is done monthly


All contributions greatly appreciated. Humble and profuse thanks,
ME

In cleaning the stations, make sure you are also replacing any tip cleaners (wire or sponge) and tip tinning materials.