| This is available from tobacco shops . |
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| Ensure that the bristles of the | |
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| your device during cleaning. |
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| Caution |
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| Store your |
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| the air or from previous cleaning can scratch and dirty your optical device | . |
E | Compressed Air | This is available from laboratory suppliers . |
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| It is essential that your compressed air is free of dust, water and oil. Only use |
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| clean, dry air . If you do not, it can lead to lmy deposits or scratches . |
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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