Process template: Instrument cycle from dirty to clean zone

§Principle

• 01Instruments move only from unclean to clean – never back.
• 02Keep clean and dirty zones clearly separated; avoid splashes from cleaning towards the clean.
• 03Treat all instruments as potentially infectious (standard precautions).

§Unclean zone.

• 01Receive and separate used instruments; wear gloves and eye protection.
• 02Clean – remove visible dirt, blood and residues (dishwasher or ultrasound).
• 03Disinfect (often thermally in the same machine).

§Clean zone

• 01Check instruments for damage and residues; lubricate where relevant.
• 02Pack in appropriate bags/cassettes with chemical indicator.
• 03Sterilize in the autoclave (class B for hollow/packaged instruments) according to the clinic's program.

§Inspection and storage

• 01Check that the indicator has changed and the package is intact and dry.
• 02Before documentation as part of self-monitoring.
• 03Store sterile, packaged instruments dry and clean for use.