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Oil Immersion
1
．
When observing through 100X objective, oil immersion is required. Low down the stage to the bottom. Drop the oil
supplied by the manufacturer on the observation area.
2
．
Turn the 100X objective on its working position.
3
．
Raise the stage by turning the coarse focusing knob till the front of the objective can touch the oil.
4
．
Swing back and forth of the nosepiece to get rid of the air bubble in the oil. Then fix the objective. Make sure that
oil should be filled between objective and specimen.
VII. Maintenance of Microscope
When not in Use
1
．
Handle the microscope with two hands stably, and put the instrument on a stable plane. Cover it up with dust
cover. Store the instrument in a dry place.
2
．
It is highly recommended that objectives & eyepiece should be kept in a separate container.
Cleaning
1
．
Keep all the optics clean. It is very important to maintain optical performance of the instrument.
2
．
If dust, or dirt is covered on the surface of the lens. Have a try of air blower before cleaning the lens.
3
．
It is recommended that gauze, or lens tissue moistened with methyl alcohol should be used to clean the lens.
Ethyl alcohol is forbidden.
4
．
When cleaning the low magnification objective, lens tissue or cotton moistened with methyl alcohol can be used.
Pay much more attention when cleaning the high magnification objective. Dry the methyl alcohol first. Do not clean so
hard. Do not use ethyl alcohol.
5
．
When microscope body has to be taken apart, make sure that do not touch the lens of the objective, or else it will
reduce the image quality.
6
．
Periodical inspection
To maintain the performance of the microscope, periodical inspection is recommended.
Changing of Bulb
A33.1502 Series biological microscope is configured with LED illumination. There is no need to change bulb if there is no
certain situation.
