Installation guide
Appendix B: Cleaning Fiber Optic Connectors
176
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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