Pipe-cleaner

This is available from tobacco shops .

 

 

 

Ensure that the bristles of the pipe-cleaner are soft, so that they do not scratch

 

 

your device during cleaning.

 

 

 

Caution

 

 

 

Store your pipe-cleaners carefully and never reuse them as dust and dirt from

 

 

 

the air or from previous cleaning can scratch and dirty your optical device

.

E

Compressed Air

This is available from laboratory suppliers .

 

 

 

It is essential that your compressed air is free of dust, water and oil. Only use

 

 

 

clean, dry air . If you do not, it can lead to ￿lmy deposits or scratches .

 

When using compressed air from a can,

Hold the can upright. A slant can cause propellant to escape with the compressed air and dirty your optical device .

Spray the ￿rst couple of seconds into the air , as the ￿rst stream of compressed air can contain condensation or propellant. Any condensation produces a ￿lmy deposit.

If you are using compressed air from a can, you should select one with a

CFC-free propellant, for the sake of the environment.

E-2 Cleaning Procedures