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10. Cleaning / Disinfecting / Sterilizing
10.1 Cleaning and Disinfection of Fiber Optic Light Guide
Clean and disinfect the light guide before every use. The light guide is not sterile when delivered and
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must be sterilized before being used for the first time.
Please check the manufacturer's information about the cleaning and disinfecting agents.
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Make sure that the cleaning and disinfectant agents you have chosen do not contain any of the
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following materials:
Organic, mineral, and oxidizing acids (minimum acceptable pH value 5.5)
Bases (maximum acceptable pH value 8.5)
Oxidation agents (e. g., hydrogen peroxide)
Halogens (chlorine, iodine, bromide)
Aromatic/halogenized hydrocarbons
The light guide must not be exposed to temperatures higher than 134 °C (273 °F).
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Use a soft brush or a soft cloth to manually remove gross contaminations. Adhering polymerized
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composite should be removed with alcohol, a plastic spatula may help in removing the material. Do
not use any sharp or pointed tools to protect the surface of the light guide from scratching.
To disinfect, place the cleaned light guide for the specified application time into the solution, making
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sure that it is completely covered. Disinfectants containing ophthalaldehyde are recommended.
Remove the light guide from the solution and rinse thoroughly (at least 10 sec.) in water with low
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germ count.
Dry the light guide with a clean cloth.
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Sterilization
Effective cleaning and disinfection are absolutely essential requirements for effective sterilization. Only
steam sterilization is approved as a sterilization procedure:
Maximum sterilization temperature 134 °C (273 °F)
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Sterilization time (exposure time at sterilization temperature) at least 20 min. at 121°C (250 °F) or
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at least 3 min. at 132 °C (270 °F) /134 °C (273 °F)
Check
Before using the light guide again, check it for damaged surfaces, discoloration, and contamination; do
not use damaged light guides. If the light guide is still contaminated, repeat the cleaning and
disinfection.
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S-19-01-1125-UV101 V1.3
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