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rheofos



Dear P2 tech
I am looking for an alternative to RHEOFOS a product used for the aluminium
pretreatment. 
This product contains phosphoric,chromic and fluoric acid
Not good for employees breathing the fumes!  
Are there any non toxic or less toxic products for aluminium chromic
conversion available? 
What other alternative products should I be looking into for this
operations?
Thank you

Mihaela ANDRONESCU, ing., M.Sc.
Ingénieure de projets
Substances toxiques et Prévention
Environnement Canada
Téléphone:   (514) 496-5509
Télécopieur: (514) 283-5836
mihaela.andronescu@ec.gc.ca