Allied Telesis NetExtreme II Adapters - Manual (Page 176)

Appendix B: Cleaning Fiber Optic Connectors
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Using a Swab
Specially treated swabs, known as stick cleaners, are available for
cleaning inside connector adapters or hard-to-reach ferrule tips. These
swabs, often referred to as “lint free” or “alcohol free” swabs, are available
from many vendors, as shown in Figure 34. Stick cleaners are available in
both 2.5 mm and 1.25 mm sizes for use on SC and MU connectors
respectively.
Note
NEVER use a household cotton swab and/or alcohol to clean a fiber
optic connector. This may leave a residue on the ferrule tip.
Figure 34. Lint-Free and Alcohol-Free Swabs
Note
Do not use compressed air or aerosol air to clean a fiber optic
connector.
To clean a recessed ferrule using a swab, perform the following
procedure.
1. Insert the swab into the adapter as shown in Figure 33 and rub the
ferrule tip with the swab. 
Figure 35. Cleaning a Recessed Ferrule
2. If desired, repeat step 1.
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