Check the quantity of mixture. (Water 75%, Sodium 5%, Nitric Acid 20% Give slow heat to the mixture but don’t give heat more than 50cg ever.
Dip the instruments in a ready mixture for approximately 30 minutes after that put out the instruments and drop them into a clean water bowl and shake the instruments continuously so that the instruments clean from chemicals completely.
Then put out the instruments from water and dry them.
Make an entry on the process traveler card after compilation the work.
After the passivation, the instruments will be safe for always from rust.
Due to the passivation, we come to know about the material of instrument that is good or bad.
Due to this process, we also come to know about the broken instrument and hole.