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Leica DM 500, DM500 B Manual 33
7. Look through the microscope and slowly
rotate the fine focus knob to raise the stage
until the specimen is in focus.
8. When finished using the oil immersion
objective, be sure to clean the front of the
objective, the specimen slide, and any
other surfaces that the oil contacted using
the instructions in section "Care of the
Microscope" on page 37.
Oil Immersion Technique (cont.)