Leica DM IRB manual Cleaning objectives, Removal of immersion oil, Acids, alkaline solutions

Obstinate dirt on glass surfaces can be carefully removed with a clean cloth moistened with distilled water. If the dirt can still not be removed, pure alcohol, chloroform or benzine can be used instead of distilled water.

Cleaning objectives

n. b.:

Objectives should not be screwed apart for cleaning. If there are signs of interior damage, send the objectives to your nearest Leica agency for repair. We also advise against cleaning the inner surfaces of eyepieces.

The front lenses of objectives are cleaned as described under “Cleaning glass surfaces”. The top lens is cleaned by blowing off the dust with a bellows ball.

Removal of immersion oil

n. b.:

Read the safety information for immersion oil!

First wipe the immersion oil off with a clean cotton cloth and then wipe several times with ethyl alcolhol.

Acids, alkaline solutions

Particular care should be taken when working with acids or other aggressive chemicals.

!n. b.:

Always avoid direct contact between such chemicals and the optics or stands.

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